Presto 75211 - 4.00MM COB D212-B&D HSSS CHKG Reamer

General-purpose reamers designed for machining steels with tensile strength up to 700 N/mm2, long-chipping aluminium, copper and soft plastics. Form A, B with straight shank up to diameter 2,7mm, form C, D with reinforced straight shank from diameter 2,8 mm up. When reaming blind holes, use the straight fluted style; for interrupted holes, it is recommended to use the spiral-fluted style. TiN coating provides longer tool life and improved surface quality.