Mini Drill Chuck 3.17-1.5 bit holder Brass Electric Motor Shaft Clamp
Name: 3.17-1.5 drill bit
With 3.17 motor shaft,
clamp 1.5-0.8MM drill
Material: Brass
Specifications: Outside diameter 8mm Length 25mm
Concentricity adjustment method: Before lock bit need to adjust the concentricity, otherwise there will be a violent vibration, power on rotate awhile on the smooth surface of the floor or glass, lock bit after bit concentric.