Toolex Taper Shank Reamer - HSS Spiral Flute Long Length (H5) - 20.47mm

The Toolex Taper Shank Reamer in HSS Spiral Flute Long Length (20.47 mm) is a precision finishing tool for deep bore work, delivering tight, repeatable bore sizes. Designed for engineers, machinists, hobbyists and maintenance teams, it uses M2 high-speed steel with a long flute and a BS 328/4 taper shank to fit standard machines, and it carries ISO H5 tolerance for consistent results. Manufactured to order—please allow 24/48 hours for despatch.

• Long flute design for deep-hole finishing: Extended flute length enables deep bore work and efficient chip clearance, helping maintain consistent bore quality and reducing heat buildup.
• Left-hand spiral with right-hand cutting: Optimized chip flow and stable cutting action deliver a smoother surface finish and tighter hole size control in demanding workpieces.
• ISO H5 tolerance with BS 328/4 taper shank: Tight, repeatable hole sizes and quick, secure mounting in compatible machines, reducing setup time and runout.

This reamer is built for reliability in production or workshop environments. With a durable HSS (M2) core and a purpose-made long flute, it stays robust under extended use and helps you finish holes cleanly in tougher metals. The standard taper shank ensures easy tool changes and consistent seating, so you can rely on repeatable results across jobs.