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Dormer Pramet A125 11.00 mm x 310 mm HSS ST STRAIGHT SHANK EXTRA LONG SERIES DRILL BS 328
| Type | Extra Long Series |
| Drill Diameter | 11.00 |
| Flute Length | 250 |
| Overall Length | 310 |
| Shank Diameter | 11 |
| Substrate | HSS |
Learn more about Klarna
Dormer Pramet A125 11.00 mm x 310 mm HSS Straight Shank Extra Long Drill (BS 328)
Engineered for professionals who demand depth, precision, and reliability, the Dormer Pramet A125 delivers an exceptional combination of reach and performance. This 11.00 mm diameter drill from the Extra Long Series is built with a straight shank and a 310 mm overall length, making it the go-to choice when you need to access deep cavities, blind holes, or workpieces that sit far from the chuck.
- 118-degree conventional point. A robust, sharp tip that starts cleanly and resists wandering, while staying easy to re-grind for extended tool life.
- Steam oxide finish. Reduces friction and prevents workpiece material from sticking to the cutting edge, promoting smoother cutting and easier chip flow.
- Extra long length series. Specifically designed for drilling very deep holes and applications requiring extended reach without compromising rigidity.
- Premium HSS material. Versatile across a range of metals including steel, aluminium, and stainless steel, balancing hardness with toughness for demanding machining environments.
- Straight shank design. Broad machine compatibility and dependable alignment in a variety of drilling setups, from benchtop units to larger milling centers.
This drill is ideal for machinists, fabricators, and workshop technicians who routinely tackle deep-drilling tasks, long-reach projects, or setups where tool accessibility is limited. It excels in metalworking applications—from automotive components and aerospace assemblies to general fabrication—where precision, durability, and extended reach matter most. For best results, pair with appropriate cutting fluids and maintain sharpness through regular regrinding to preserve performance and extend tool life.

| Type | Extra Long Series |
| Drill Diameter | 11.00 |
| Flute Length | 250 |
| Overall Length | 310 |
| Shank Diameter | 11 |
| Substrate | HSS |
| Coated | Steam Tempered |
What time are Protool open?
We are open Monday to Friday between 8:30am and 5pm.
Do you offer Free Next Day delivery?
Yes! We offer Free Next Day delivery via Royal Mail Tracked 24 on all orders over £50 ex VAT*. We also offer Free DPD Local Next Day delivery on all orders over £100 ex VAT*.
We also offer the following:
- Royal Mail Tracked 24 — £5.90 (FREE on orders over £50 ex VAT*). Order before 4:30pm for next day delivery. No signature required.
- DPD Local Next Day — £8.00 (FREE on orders over £100 ex VAT*). Standard next day delivery to UK mainland addresses.
- Royal Mail Special Delivery — £12.50. Guaranteed delivery before 1pm the next working day.
- DPD Saturday Delivery — £25.00. Must be ordered on Friday before 4pm. Pre-12pm delivery.
For delivery to Scottish Highlands & Islands, Northern Ireland, Republic of Ireland, or overseas locations, additional charges apply. Please see our delivery page for full details, or call us on 01732 887 334.
*T's & C's and exclusions apply. Please see our delivery page for more information on all our services.
Full Range: Dormer Pramet A125 HSS ST STRAIGHT SHANK EXTRA LONG SERIES DRILLS BS 328
View full collection →You are viewing DOR-A12511.0X315. Click any other SKU to view its full details.
| Product SKU | Drill Diameter | Flute Length | Overall Length | Shank Diameter | Price | Stock | Order |
|---|---|---|---|---|---|---|---|
| DOR-A1251.4X160 | 1.40 | 100 | 160 | 1.4 | £18.83 | 2 days | |
| DOR-A1251.5X125 | 1.50 | 80 | 125 | 1.5 | £10.72 | 2 days | |
| DOR-A1251.5X160 | 1.50 | 100 | 160 | 1.5 | £12.72 | 2 days | |
| DOR-A1251/16X125 | 1/16 | 80 | 125 | 1.59 | £13.07 | 2 days | |
| DOR-A1251/16X160 | 1/16 | 100 | 160 | 1.59 | £15.64 | 2 days | |
| DOR-A1251.8X160 | 1.80 | 100 | 160 | 1.8 | £16.45 | 2 days | |
| DOR-A1255/64X160 | 5/64 | 100 | 160 | 1.98 | £16.14 | 2 days | |
| DOR-A1255/64X125 | 5/64 | 80 | 125 | 1.98 | £15.49 | 2 days | |
| DOR-A1252.0X125 | 2.00 | 80 | 125 | 2 | £8.30 | 2 days | |
| DOR-A1252.0X160 | 2.00 | 100 | 160 | 2 | £9.76 | 2 days | |
| DOR-A1252.2X160 | 2.20 | 100 | 160 | 2.2 | £10.11 | 2 days | |
| DOR-A1253/32X160 | 3/32 | 100 | 160 | 2.38 | £9.79 | 2 days | |
| DOR-A1253/32X125 | 3/32 | 80 | 125 | 2.38 | £8.94 | 2 days | |
| DOR-A1252.5X125 | 2.50 | 80 | 125 | 2.5 | £7.84 | 2 days | |
| DOR-A1252.5X160 | 2.50 | 100 | 160 | 2.5 | £9.65 | 2 days | |
| DOR-A1257/64X125 | 7/64 | 80 | 125 | 2.78 | £9.47 | 2 days | |
| DOR-A1257/64X160 | 7/64 | 100 | 160 | 2.78 | £14.50 | 2 days | |
| DOR-A1253.0X160 | 3.00 | 100 | 160 | 3 | £9.17 | 2 days | |
| DOR-A1253.0X200 | 3.00 | 150 | 200 | 3 | £12.25 | 2 days | |
| DOR-A1253.0X250 | 3.00 | 200 | 250 | 3 | £15.53 | 2 days | |
| DOR-A1251/8X160 | 1/8 | 100 | 160 | 3.18 | £11.26 | 2 days | |
| DOR-A1251/8X200 | 1/8 | 150 | 200 | 3.18 | £11.45 | 2 days | |
| DOR-A1251/8X250 | 1/8 | 200 | 250 | 3.18 | £22.28 | 2 days | |
| DOR-A1251/8X315 | 1/8 | 250 | 310 | 3.18 | £25.63 | 2 days | |
| DOR-A1253.3X160 | 3.30 | 100 | 160 | 3.3 | £13.22 | 2 days | |
| DOR-A1253.5X160 | 3.50 | 100 | 160 | 3.5 | £9.30 | 2 days | |
| DOR-A1253.5X200 | 3.50 | 150 | 200 | 3.5 | £11.48 | 2 days | |
| DOR-A1253.5X250 | 3.50 | 200 | 250 | 3.5 | £16.17 | 2 days | |
| DOR-A1259/64X160 | 9/64 | 100 | 160 | 3.57 | £16.32 | 2 days | |
| DOR-A1259/64X200 | 9/64 | 150 | 200 | 3.57 | £16.42 | 2 days | |
| DOR-A1259/64X315 | 9/64 | 250 | 310 | 3.57 | £23.76 | 2 days | |
| DOR-A1255/32X160 | 5/32 | 100 | 160 | 3.97 | £11.43 | 2 days | |
| DOR-A1255/32X200 | 5/32 | 150 | 200 | 3.97 | £13.53 | 2 days | |
| DOR-A1255/32X250 | 5/32 | 200 | 250 | 3.97 | £26.08 | 2 days | |
| DOR-A1255/32X315 | 5/32 | 250 | 310 | 3.97 | £33.11 | 2 days | |
| DOR-A1254.0X160 | 4.00 | 100 | 160 | 4 | £9.33 | 2 days | |
| DOR-A1254.0X200 | 4.00 | 150 | 200 | 4 | £12.04 | 2 days | |
| DOR-A1254.0X250 | 4.00 | 200 | 250 | 4 | £16.13 | 2 days | |
| DOR-A1254.0X315 | 4.00 | 250 | 310 | 4 | £20.00 | 2 days | |
| DOR-A12511/64X160 | 11/64 | 100 | 160 | 4.37 | £15.03 | 2 days | |
| DOR-A12511/64X200 | 11/64 | 150 | 200 | 4.37 | £18.10 | 2 days | |
| DOR-A12511/64X315 | 11/64 | 250 | 310 | 4.37 | £26.08 | 2 days | |
| DOR-A1254.5X160 | 4.50 | 100 | 160 | 4.5 | £10.84 | 2 days | |
| DOR-A1254.5X200 | 4.50 | 150 | 200 | 4.5 | £14.21 | 2 days | |
| DOR-A1254.5X250 | 4.50 | 200 | 250 | 4.5 | £21.78 | 2 days | |
| DOR-A1254.5X315 | 4.50 | 250 | 310 | 4.5 | £23.80 | 2 days | |
| DOR-A1253/16X160 | 3/16 | 100 | 160 | 4.76 | £10.99 | 2 days | |
| DOR-A1253/16X200 | 3/16 | 150 | 200 | 4.76 | £12.52 | 2 days | |
| DOR-A1253/16X250 | 3/16 | 200 | 250 | 4.76 | £15.94 | 2 days | |
| DOR-A1253/16X315 | 3/16 | 250 | 310 | 4.76 | £23.30 | 2 days | |
| DOR-A1253/16X400 | 3/16 | 300 | 400 | 4.76 | £44.05 | 2 days | |
| DOR-A1255.0X160 | 5.00 | 100 | 160 | 5 | £10.53 | 2 days | |
| DOR-A1255.0X200 | 5.00 | 150 | 200 | 5 | £13.86 | 2 days | |
| DOR-A1255.0X250 | 5.00 | 200 | 250 | 5 | £17.24 | 2 days | |
| DOR-A1255.0X315 | 5.00 | 250 | 310 | 5 | £23.89 | 2 days | |
| DOR-A1255.0X400 | 5.00 | 300 | 400 | 5 | £30.42 | 2 days | |
| DOR-A12513/64X200 | 13/64 | 150 | 200 | 5.16 | £21.57 | 2 days | |
| DOR-A12513/64X250 | 13/64 | 200 | 250 | 5.16 | £27.95 | 2 days | |
| DOR-A12513/64X315 | 13/64 | 250 | 310 | 5.16 | £36.71 | 2 days | |
| DOR-A1255.5X200 | 5.50 | 150 | 200 | 5.5 | £12.84 | 2 days | |
| DOR-A1255.5X250 | 5.50 | 200 | 250 | 5.5 | £20.75 | 2 days | |
| DOR-A1255.5X315 | 5.50 | 250 | 310 | 5.5 | £32.83 | 2 days | |
| DOR-A1257/32X200 | 7/32 | 150 | 200 | 5.56 | £16.69 | 2 days | |
| DOR-A1257/32X250 | 7/32 | 200 | 250 | 5.56 | £21.33 | 2 days | |
| DOR-A12515/64X200 | 15/64 | 150 | 200 | 5.95 | £25.86 | 2 days | |
| DOR-A12515/64X315 | 15/64 | 250 | 310 | 5.95 | £24.81 | 2 days | |
| DOR-A1256.0X200 | 6.00 | 150 | 200 | 6 | £14.91 | 2 days | |
| DOR-A1256.0X250 | 6.00 | 200 | 250 | 6 | £19.96 | 2 days | |
| DOR-A1256.0X315 | 6.00 | 250 | 310 | 6 | £24.85 | 2 days | |
| DOR-A1256.0X400 | 6.00 | 300 | 400 | 6 | £36.16 | 2 days | |
| DOR-A1251/4X200 | 1/4 | 150 | 200 | 6.35 | £16.32 | 2 days | |
| DOR-A1251/4X250 | 1/4 | 200 | 250 | 6.35 | £20.69 | 2 days | |
| DOR-A1251/4X315 | 1/4 | 250 | 310 | 6.35 | £25.63 | 2 days | |
| DOR-A1251/4X400 | 1/4 | 300 | 400 | 6.35 | £52.44 | 2 days | |
| DOR-A1251/4X500 | 1/4 | 400 | 460 | 6.35 | £72.96 | 2 days | |
| DOR-A1256.5X200 | 6.50 | 150 | 200 | 6.5 | £17.10 | 2 days | |
| DOR-A1256.5X250 | 6.50 | 200 | 250 | 6.5 | £21.20 | 2 days | |
| DOR-A1256.5X315 | 6.50 | 250 | 310 | 6.5 | £30.64 | 2 days | |
| DOR-A12517/64X200 | 17/64 | 150 | 200 | 6.75 | £21.11 | 2 days | |
| DOR-A12517/64X250 | 17/64 | 200 | 250 | 6.75 | £28.41 | 2 days | |
| DOR-A12517/64X500 | 17/64 | 400 | 460 | 6.75 | £72.96 | 2 days | |
| DOR-A1257.0X200 | 7.00 | 150 | 200 | 7 | £18.45 | 2 days | |
| DOR-A1257.0X250 | 7.00 | 200 | 250 | 7 | £23.58 | 2 days | |
| DOR-A1257.0X315 | 7.00 | 250 | 310 | 7 | £33.24 | 2 days | |
| DOR-A1257.5X200 | 7.50 | 150 | 200 | 7.5 | £22.12 | 2 days | |
| DOR-A1257.5X250 | 7.50 | 200 | 250 | 7.5 | £26.68 | 2 days | |
| DOR-A1257.5X315 | 7.50 | 250 | 310 | 7.5 | £34.56 | 2 days | |
| DOR-A1255/16X200 | 5/16 | 150 | 200 | 7.94 | £20.93 | 2 days | |
| DOR-A1255/16X250 | 5/16 | 200 | 250 | 7.94 | £26.36 | 2 days | |
| DOR-A1255/16X315 | 5/16 | 250 | 310 | 7.94 | £34.88 | 2 days | |
| DOR-A1255/16X500 | 5/16 | 400 | 460 | 7.94 | £86.18 | 2 days | |
| DOR-A1258.0X250 | 8.00 | 200 | 250 | 8 | £26.04 | 2 days | |
| DOR-A1258.0X315 | 8.00 | 250 | 310 | 8 | £35.07 | 2 days | |
| DOR-A1258.0X400 | 8.00 | 300 | 400 | 8 | £44.23 | 2 days | |
| DOR-A12521/64X315 | 21/64 | 250 | 310 | 8.33 | £64.30 | 2 days | |
| DOR-A1258.5X250 | 8.50 | 200 | 250 | 8.5 | £35.66 | 2 days | |
| DOR-A1258.5X315 | 8.50 | 250 | 310 | 8.5 | £47.88 | 2 days | |
| DOR-A12511/32X250 | 11/32 | 200 | 250 | 8.73 | £34.06 | 2 days | |
| DOR-A12511/32X315 | 11/32 | 250 | 310 | 8.73 | £58.37 | 2 days | |
| DOR-A12511/32X400 | 11/32 | 300 | 400 | 8.73 | £72.05 | 2 days | |
| DOR-A12511/32X500 | 11/32 | 400 | 460 | 8.73 | £86.18 | 2 days | |
| DOR-A1259.0X250 | 9.00 | 200 | 250 | 9 | £30.87 | 2 days | |
| DOR-A1259.0X315 | 9.00 | 250 | 310 | 9 | £39.31 | 2 days | |
| DOR-A1259.0X400 | 9.00 | 300 | 400 | 9 | £56.54 | 2 days | |
| DOR-A1259.5X250 | 9.50 | 200 | 250 | 9.5 | £36.98 | 2 days | |
| DOR-A1259.5X315 | 9.50 | 250 | 310 | 9.5 | £49.70 | 2 days | |
| DOR-A1253/8X250 | 3/8 | 200 | 250 | 9.52 | £33.61 | 2 days | |
| DOR-A1253/8X315 | 3/8 | 250 | 310 | 9.52 | £42.59 | 2 days | |
| DOR-A1253/8X400 | 3/8 | 300 | 400 | 9.52 | £53.81 | 2 days | |
| DOR-A1253/8X500 | 3/8 | 400 | 460 | 9.52 | £74.33 | 2 days | |
| DOR-A12510.0X250 | 10.00 | 200 | 250 | 10 | £35.52 | 2 days | |
| DOR-A12510.0X315 | 10.00 | 250 | 310 | 10 | £44.19 | 2 days | |
| DOR-A12510.0X400 | 10.00 | 300 | 400 | 10 | £65.21 | 2 days | |
| DOR-A12513/32X250 | 13/32 | 200 | 250 | 10.32 | £44.32 | 2 days | |
| DOR-A12513/32X315 | 13/32 | 250 | 310 | 10.32 | £54.72 | 2 days | |
| DOR-A12510.5X250 | 10.50 | 200 | 250 | 10.5 | £44.28 | 2 days | |
| DOR-A12510.5X315 | 10.50 | 250 | 310 | 10.5 | £57.46 | 2 days | |
| DOR-A12510.5X400 | 10.50 | 300 | 400 | 10.5 | £68.86 | 2 days | |
| DOR-A12511.0X250 | 11.00 | 200 | 250 | 11 | £40.04 | 2 days | |
| DOR-A12511.0X315 Viewing | 11.00 | 250 | 310 | 11 | £51.07 | 2 days | |
| DOR-A12511.0X400 | 11.00 | 300 | 400 | 11 | £63.38 | 2 days | |
| DOR-A1257/16X250 | 7/16 | 200 | 250 | 11.11 | £49.25 | 2 days | |
| DOR-A1257/16X315 | 7/16 | 250 | 310 | 11.11 | £62.02 | 2 days | |
| DOR-A1257/16X400 | 7/16 | 300 | 400 | 11.11 | £129.05 | 2 days | |
| DOR-A12529/64X315 | 29/64 | 250 | 310 | 11.51 | £57.46 | 2 days | |
| DOR-A12512.0X250 | 12.00 | 200 | 250 | 12 | £46.97 | 2 days | |
| DOR-A12512.0X315 | 12.00 | 250 | 310 | 12 | £54.72 | 2 days | |
| DOR-A12512.0X400 | 12.00 | 300 | 400 | 12 | £73.42 | 2 days | |
| DOR-A12531/64X315 | 31/64 | 250 | 310 | 12.3 | £57.46 | 2 days | |
| DOR-A1251/2X250 | 1/2 | 200 | 250 | 12.7 | £57.00 | 2 days | |
| DOR-A1251/2X315 | 1/2 | 250 | 310 | 12.7 | £72.96 | 2 days | |
| DOR-A1251/2X400 | 1/2 | 300 | 400 | 12.7 | £95.76 | 2 days | |
| DOR-A12513.0X315 | 13.00 | 250 | 310 | 13 | £58.37 | 2 days | |
| DOR-A12513.0X400 | 13.00 | 300 | 400 | 13 | £74.33 | 2 days | |
| DOR-A12517/32X315 | 17/32 | 250 | 310 | 13.49 | £58.37 | 2 days | |
| DOR-A12514.0X315 | 14.00 | 250 | 310 | 14 | £69.31 | 2 days | |
| DOR-A12514.0X400 | 14.00 | 300 | 400 | 14 | £81.17 | 2 days | |
| DOR-A1259/16X315 | 9/16 | 250 | 310 | 14.29 | £69.31 | 2 days | |
| DOR-A12537/64X315 | 37/64 | 250 | 310 | 14.68 | £69.31 | 2 days | |
| DOR-A12519/32X315 | 19/32 | 250 | 310 | 15.08 | £69.31 | 2 days | |
| DOR-A12519/32X500 | 19/32 | 400 | 460 | 15.08 | £93.02 | 2 days | |
| DOR-A1255/8X315 | 5/8 | 250 | 310 | 15.88 | £69.31 | 2 days | |
| DOR-A1255/8X500 | 5/8 | 400 | 460 | 15.88 | £93.02 | 2 days | |
| DOR-A12511/16X315 | 11/16 | 250 | 310 | 17.46 | £69.31 | 2 days | |
| DOR-A1253/4X315 | 3/4 | 250 | 310 | 19.05 | £70.68 | 2 days | |
| DOR-A1253/4X500 | 3/4 | 400 | 460 | 19.05 | £95.30 | 2 days |
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