1/4 shank extended double-edged straight knife $ 8.55 Name: Extended straight knife Ball diameter (mm): 9.52 Min cutting diameter at center (mm): 9.52 Maximum cutting depth: 50 Number of effective cutting edges: 2 Function length (mm): 50 Shank form: round Diameter of shank (mm): 6.35 System: British system Useful length (mm): 50 Material: hard alloy Type: Slotted Number of slots: 2 Blade length: 50 (mm) Blade diameter: 9.52 (mm)