Toolex Reamer with a straight shank and spiral flute is designed for precise hole enlargement and finishing, giving machinists a reliable option for achieving tight tolerances on a variety of metal parts. Diameter: 12.78 mm Material: HSS-E (high-speed steel with cobalt) for enhanced hardness and heat resistance Flute Design: Spiral flute promotes efficient chip evacuation and smoother cutting Shank Type: Straight shank for easy clamping in common tool-holding systems Application: Ideal for enlarging existing holes and finishing to a precise diameter Performance: Delivers consistent, smooth holes with tight tolerances across a range of materials These features come together to minimize rework and downtime, delivering reliable, repeatable results from start to finish. The cobalt-enhanced HSS composition handles heat well, extending tool life in demanding reaming applications, while the spiral flute design reduces chip buildup for steady progress on every cut.