Toolex Die Maker Reamer HSS-E Straight Flute SS M35 COB 5% - 8-4mm

The Toolex Die Maker Reamer is a precision finishing tool designed for dies, molds, and precision holes. Made from HSS-E (M35 cobalt), it delivers outstanding wear resistance and reliable performance for repeatable bore finishing. Its straight flute and 5% taper provide controlled cutting action and efficient chip flow for clean, accurate bores.

Designed for professionals and serious hobbyists alike, this reamer is ideal for toolmakers, machinists, and engineers who require consistent hole sizes and a dependable surface finish. It supports through-holes and tight-tolerance components, helping parts mate precisely in assemblies and reducing rework.

• Premium HSS‑E (M35 cobalt) construction: Enhanced red-hardness and wear resistance extend tool life and maintain sharpness through demanding reaming tasks.
• 5% taper with straight flute and right‑hand cut: The taper guides cutting action for clean bore starts, while the straight flute improves chip evacuation for smooth finishes in through-holes.
• Tight, defined tolerances: D = ±0.05 mm, d = ±0.05 mm, L = ±1 mm, d1 = h8 ensure repeatable bore sizes and reliable part mating across production runs.

This reamer helps you finish holes with consistent diameter and superior surface quality, speeding up setup and reducing downtime. With its robust HSS‑E cobalt composition and precise tolerances, it delivers dependable performance in die making and mold work, giving you confidence in every finish and easier downstream assembly.