Toolex Die Maker Reamer HSS-E Straight Flute SS M35 COB 10% - 10-4mm

The Toolex Die Maker Reamer is a precision straight-flute reamer designed for die makers, toolrooms, and metalworking shops that require accurate bore finishing. Crafted from HSS-E with M35 cobalt content, it delivers reliable edge retention and consistent results across a range of materials, helping you achieve tight, repeatable bore sizes.

With a 10% taper and right-hand cut, this reamer eases entry, reduces chatter, and produces clean, true holes ready for assembly or subsequent finishing steps.

• Extreme dimensional tolerances for repeatable fits: Keeps bore size within D = ±0.05 mm and bore diameter d = ±0.05 mm, with length tolerance L = ±1 mm and d1 = h8, so every hole meets the same spec for reliable assembly and minimal rework.
• HSS‑E (M35 cobalt) for durability: The cobalt-enhanced steel delivers higher hot hardness and wear resistance, extending life when reaming through harder metals and reducing tool changes in busy shops.
• 10% taper with straight flute, right-hand cut for smooth cutting: The taper guides entry and aligns the tool for stable cutting, while the straight flute and right-hand cut minimize chatter and deliver a consistent, burr-free bore in die‑making work.

By combining tight tolerances, durable construction, and a user-friendly cutting geometry, this reamer helps you finish holes faster with less rework, improves dimensional accuracy across parts, and prolongs tool life in demanding production runs. It’s a dependable choice for toolmakers, machinists, and DIY enthusiasts who value repeatable results and a clean bore.