Rotary File, Rotary Bit Set, port and polish kit cylinder head porting tools 6pcs Tungsten Carbide Aluminum Rotary Files Burr Set 6mm Shank 10mm Cutting Diameter with High Abrasion Resistance
Note:
1, Rotary file in pneumatic or electric tools, the speed is generally 6000-40000RPM, must clamp the tool firmly.
2, Cutting direction should be from right to left uniform movement, not like the use of grinding wheel as reciprocating cutting; be careful not to force too much (the pressure is generally not more than 4 kgf).