Toolex Reamer - Straight Shank - Spiral Flute - Stub Length - Carbide - Through Coolant - H4 - 12.55mm

The Toolex Reamer - Straight Shank - Spiral Flute - Stub Length - Carbide - Through Coolant - H4 - 12.55mm is a precision carbide reamer designed to finish holes to ISO H4 tolerance with repeatable accuracy in hard materials. Built for restricted bores, its straight shank and stub length keep tooling compact and stable in crowded assemblies, while the left-hand spiral flute and right-hand cutting deliver controlled, predictable material removal. The tool complies with DIN 8093 and uses an intermediate precision K10 carbide grade for reliable performance across demanding applications.

Manufactured to order by Toolex Ltd, this reamer is despatched within 24–48 hours of order placement. Through coolant delivers coolant directly through the shank for efficient cooling and chip evacuation, helping maintain accuracy and extend tool life. With a 12.55 mm nominal size, it’s held to ISO H4 tolerance for tight, repeatable hole finishes across production runs.

• Through coolant delivery: Direct cooling and chip evacuation through the tool shank improve heat management and finish quality in harder materials.
• DIN 8093 / ISO H4 precision: Ensures a precise, repeatable bore size (12.55 mm) with consistent tolerance across uses.
• Stub length with straight shank: Compact profile for restricted bores and easy, stable clamping in common toolholders, reducing runout and setup time.

This combination delivers reliable, controlled hole finishing with fewer reworks, improved surface quality, and a smoother workflow in production environments that demand consistent results from precision reaming.