1 cutter head: the alloy cutter head is durable, the drilling is smooth and flat, and the cutter head with different diameters canbe replaced at will .
2 Motor: High quality motor, durable.
3 switches: pneumatic foot switch, safe and labor-saving.
4 operationpanel: panel operation, knife calibration, easy to learn .
5 Positioning ruler: precise and easy to operate.