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Somta Long Series Drill - HSS-E Parabolic Flute - 7.7mm
| Drill Diameter | 7.70 |
| Flute Length | 109 |
| Overall Length | 165 |
| Substrate | HSS-E |
| Type | Long Series |
| Shank Diameter | 7.7 |
Learn more about Klarna
Meet the Somta Long Series Drill – HSS-E Parabolic Flute – 7.7mm, a purpose-built solution for deep-hole drilling where reach and reliability matter. This drill bit is designed to tackle thick workpieces with unwavering precision, turning challenging bores into clean, repeatable holes.

- Long-length design for deep-hole access: The extended flute length delivers the reach needed for internal bores, pockets, and hard-to-reach areas without sacrificing rigidity.
- HSS-E alloy for durability and heat resistance: An enhanced high-speed steel composition stands up to elevated cutting temperatures, reducing wear during extended drilling sessions.
- Parabolic flute geometry for superior chip evacuation: Efficient chip removal keeps the cut clear, lowers heat buildup, and maintains consistent hole quality throughout the operation.
- Reduced cutting forces and lower friction: The parabolic design and sharp cutting edges minimize resistance, improving hole diameter accuracy and extending tool life.
- Clean, precise holes in demanding materials: Optimized for metals such as steel and cast iron, as well as common alloys encountered in fabrication and maintenance work.
- Versatile for industrial and workshop use: Ideal for production runs or single-repair jobs where deep drilling capability is essential.
In practice, this 7.7mm HSS-E parabolic-flute long drill excels when you need consistent, high-quality holes in thick components, from automotive housings to machine frames. Use appropriate speeds and feeds for your material, and apply light lubrication to minimize wear and preserve hole straightness. The Somta Long Series Drill is more than a bit—it’s a dependable tool that helps you finish projects faster with fewer interruptions.
| Drill Diameter | 7.70 |
| Flute Length | 109 |
| Overall Length | 165 |
| Substrate | HSS-E |
| Type | Long Series |
| Shank Diameter | 7.7 |
| Coated | No |
| Standard | DIN 340 |
| Helix Angle | 40° |
| Point Angle | 130° |
| Point Geometry | Split Point |
| Coating | Uncoated |
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: Somta Long Series Drill - HSS-E Parabolic Flute (110)
View full collection →You are viewing 1100770. Click any other SKU to view its full details.
| Product SKU | Drill Diameter | Flute Length | Overall Length | Shank Diameter | Price | Stock | Order |
|---|---|---|---|---|---|---|---|
| 1100100 | 1.00 | 33 | 56 | 1 | £2.42 | 1-2 days | |
| 1100110 | 1.10 | 37 | 60 | 1.1 | £2.37 | 1-2 days | |
| 1100120 | 1.20 | 41 | 65 | 1.2 | £2.57 | 1-2 days | |
| 1100130 | 1.30 | 41 | 65 | 1.3 | £2.61 | In Stock | |
| 1100140 | 1.40 | 41 | 70 | 1.4 | £3.88 | In Stock | |
| 1100150 | 1.50 | 45 | 70 | 1.5 | £4.52 | 1-2 days | |
| 1100160 | 1.60 | 50 | 76 | 1.6 | £5.02 | 1-2 days | |
| 1100170 | 1.70 | 50 | 76 | 1.7 | £4.98 | 1-2 days | |
| 1100180 | 1.80 | 53 | 80 | 1.8 | £4.90 | In Stock | |
| 1100190 | 1.90 | 53 | 80 | 1.9 | £4.90 | In Stock | |
| 1100200 | 2.00 | 56 | 85 | 2 | £4.90 | 1-2 days | |
| 1100210 | 2.10 | 56 | 85 | 2.1 | £4.90 | 1-2 days | |
| 1100220 | 2.20 | 59 | 90 | 2.2 | £5.07 | In Stock | |
| 1100230 | 2.30 | 59 | 90 | 2.3 | £5.07 | In Stock | |
| 1100240 | 2.40 | 62 | 95 | 2.4 | £5.30 | In Stock | |
| 1100250 | 2.50 | 62 | 95 | 2.5 | £4.47 | 1-2 days | |
| 1100260 | 2.60 | 66 | 100 | 2.6 | £4.43 | 1-2 days | |
| 1100270 | 2.70 | 66 | 100 | 2.7 | £4.66 | In Stock | |
| 1100280 | 2.80 | 66 | 100 | 2.8 | £4.66 | In Stock | |
| 1100290 | 2.90 | 66 | 100 | 2.9 | £4.58 | 1-2 days | |
| 1100300 | 3.00 | 66 | 100 | 3 | £4.47 | In Stock | |
| 1100310 | 3.10 | 69 | 106 | 3.1 | £4.75 | In Stock | |
| 1100320 | 3.20 | 69 | 106 | 3.2 | £4.66 | In Stock | |
| 1100330 | 3.30 | 69 | 106 | 3.3 | £4.66 | 1-2 days | |
| 1100340 | 3.40 | 73 | 112 | 3.4 | £5.30 | 1-2 days | |
| 1100350 | 3.50 | 73 | 112 | 3.5 | £5.26 | In Stock | |
| 1100360 | 3.60 | 73 | 112 | 3.6 | £5.19 | In Stock | |
| 1100370 | 3.70 | 73 | 112 | 3.7 | £5.19 | In Stock | |
| 1100380 | 3.80 | 78 | 119 | 3.8 | £5.38 | In Stock | |
| 1100390 | 3.90 | 78 | 119 | 3.9 | £5.38 | In Stock | |
| 1100400 | 4.00 | 78 | 119 | 4 | £5.38 | 1-2 days | |
| 1100410 | 4.10 | 78 | 119 | 4.1 | £5.94 | In Stock | |
| 1100420 | 4.20 | 78 | 119 | 4.2 | £5.94 | 1-2 days | |
| 1100430 | 4.30 | 82 | 126 | 4.3 | £6.49 | In Stock | |
| 1100440 | 4.40 | 82 | 126 | 4.4 | £6.42 | In Stock | |
| 1100450 | 4.50 | 82 | 126 | 4.5 | £6.42 | In Stock | |
| 1100460 | 4.60 | 82 | 126 | 4.6 | £7.02 | In Stock | |
| 1100470 | 4.70 | 82 | 126 | 4.7 | £6.81 | In Stock | |
| 1100480 | 4.80 | 87 | 132 | 4.8 | £7.57 | In Stock | |
| 1100490 | 4.90 | 87 | 132 | 4.9 | £7.50 | In Stock | |
| 1100500 | 5.00 | 87 | 132 | 5 | £7.00 | In Stock | |
| 1100510 | 5.10 | 87 | 132 | 5.1 | £7.57 | 1-2 days | |
| 1100520 | 5.20 | 87 | 132 | 5.2 | £7.50 | In Stock | |
| 1100530 | 5.30 | 87 | 132 | 5.3 | £6.93 | In Stock | |
| 1100540 | 5.40 | 91 | 139 | 5.4 | £9.18 | In Stock | |
| 1100550 | 5.50 | 91 | 139 | 5.5 | £9.18 | In Stock | |
| 1100560 | 5.60 | 91 | 139 | 5.6 | £9.14 | 1-2 days | |
| 1100570 | 5.70 | 91 | 139 | 5.7 | £9.14 | In Stock | |
| 1100580 | 5.80 | 91 | 139 | 5.8 | £8.99 | In Stock | |
| 1100590 | 5.90 | 91 | 139 | 5.9 | £8.90 | In Stock | |
| 1100600 | 6.00 | 91 | 139 | 6 | £8.35 | 1-2 days | |
| 1100610 | 6.10 | 97 | 148 | 6.1 | £11.07 | In Stock | |
| 1100620 | 6.20 | 97 | 148 | 6.2 | £10.13 | In Stock | |
| 1100630 | 6.30 | 97 | 148 | 6.3 | £9.54 | In Stock | |
| 1100640 | 6.40 | 97 | 148 | 6.4 | £10.88 | In Stock | |
| 1100650 | 6.50 | 97 | 148 | 6.5 | £11.70 | In Stock | |
| 1100660 | 6.60 | 97 | 148 | 6.6 | £10.73 | In Stock | |
| 1100670 | 6.70 | 97 | 148 | 6.7 | £10.09 | In Stock | |
| 1100680 | 6.80 | 102 | 156 | 6.8 | £12.64 | In Stock | |
| 1100690 | 6.90 | 102 | 156 | 6.9 | £12.51 | In Stock | |
| 1100700 | 7.00 | 102 | 156 | 7 | £12.36 | In Stock | |
| 1100710 | 7.10 | 102 | 156 | 7.1 | £11.77 | In Stock | |
| 1100720 | 7.20 | 102 | 156 | 7.2 | £12.78 | In Stock | |
| 1100730 | 7.30 | 102 | 156 | 7.3 | £12.64 | In Stock | |
| 1100740 | 7.40 | 102 | 156 | 7.4 | £12.51 | In Stock | |
| 1100750 | 7.50 | 102 | 156 | 7.5 | £11.77 | In Stock | |
| 1100760 | 7.60 | 109 | 165 | 7.6 | £13.53 | 1-2 days | |
| 1100770 Viewing | 7.70 | 109 | 165 | 7.7 | £13.53 | In Stock | |
| 1100780 | 7.80 | 109 | 165 | 7.8 | £13.42 | In Stock | |
| 1100790 | 7.90 | 109 | 165 | 7.9 | £13.23 | In Stock | |
| 1100800 | 8.00 | 109 | 165 | 8 | £12.57 | In Stock | |
| 1100810 | 8.10 | 109 | 165 | 8.1 | £14.42 | In Stock | |
| 1100820 | 8.20 | 109 | 165 | 8.2 | £14.42 | In Stock | |
| 1100830 | 8.30 | 109 | 165 | 8.3 | £14.42 | In Stock | |
| 1100840 | 8.40 | 109 | 165 | 8.4 | £14.29 | In Stock | |
| 1100850 | 8.50 | 109 | 165 | 8.5 | £13.53 | In Stock | |
| 1100860 | 8.60 | 115 | 175 | 8.6 | £15.84 | In Stock | |
| 1100870 | 8.70 | 115 | 175 | 8.7 | £15.90 | In Stock | |
| 1100880 | 8.80 | 115 | 175 | 8.8 | £15.71 | In Stock | |
| 1100890 | 8.90 | 115 | 175 | 8.9 | £15.56 | In Stock | |
| 1100900 | 9.00 | 115 | 175 | 9 | £14.80 | In Stock | |
| 1100910 | 9.10 | 115 | 175 | 9.1 | £16.94 | In Stock | |
| 1100920 | 9.20 | 115 | 175 | 9.2 | £16.94 | In Stock | |
| 1100930 | 9.30 | 115 | 175 | 9.3 | £16.79 | In Stock | |
| 1100940 | 9.40 | 115 | 175 | 9.4 | £16.62 | In Stock | |
| 1100950 | 9.50 | 115 | 175 | 9.5 | £15.84 | 1-2 days | |
| 1100960 | 9.60 | 121 | 184 | 9.6 | £18.72 | In Stock | |
| 1100970 | 9.70 | 121 | 184 | 9.7 | £18.72 | In Stock | |
| 1100980 | 9.80 | 121 | 184 | 9.8 | £18.53 | In Stock | |
| 1100990 | 9.90 | 121 | 184 | 9.9 | £18.40 | In Stock | |
| 1101000 | 10.00 | 121 | 184 | 10 | £17.81 | In Stock |
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