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
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).