Multi-size Engraving Bit Motor Adapter, CNC Router Adapter with 6mm to 3.175mm Chuck, CNC Milling Tool for Grinding and Engraving Machines.

CNC router bit adapter, heat treated and precision ground.
Fine grinding, coordinated size, high precision, suitable for ER engraving chuck.
Made of high quality steel and heat treated, it offers good flexibility and wear resistance.
Commonly used for engraving machine spindle motors, curved knives and tool holders.
The clamping device is characterized by large clamping force, high precision and good clamping stability.