Dormer Pramet C40 20.0mm HSS-E Flatted Shank Multi-Flute Roughing (NF) Standard Length End Mill DIN 844 KThe Dormer Pramet C40 20. 0mm HSS E Flatted Shank Multi Flute Roughing End Mill is a robust tool designed for efficient roughing in metalworking. Built for shoulder milling, slot milling, and ramping, its ideal for machinists working with freemachining and plain carbon steels as well as copper and copper alloys. Diameter: 20. 0 mm Cutting length: 38 mm Overall length: 104 mm Reach neck relief: 53. 5 mm Shank: Weldon 20 mm with flatted shank for secure