Rotary File Rotary Tool Accessory Type Rotary File Bit Material Alloy Steel Shape Pointed Tree Max Speed 2 500 RPM Shank Diameter 1/2 in Mount Type Mounted Overall Length 2 1/8 in Burr Diameter 1/2 in Head Length 1 in Head Width 1/2 in Material Application Bronze Iron Mild Steel Plastic Soft Metal Wood