Dormer Pramet C273 12.0mm HSS-E-Powder Metal Flatted Shank Multi-Flute Long Series End Mill DIN 844 LThe Dormer Pramet C273 12. 0 mm HSS E Powder Metallurgial End Mill is a robust long series tool designed for shoulder and slot milling in free machining and plain carbon steels, as well as copper and copper alloys. Diameter: 12. 0 mm Length of cut: 53 mm for extended reach in deep pockets Overall length: 110 mm with neck relief to reduce rubbing and heat buildup Reach neck relief: 64. 5 mm, enabling access to deeper features without sacrificing