The high precision ensure a precise fit between the body and the column. Suitable for drilling, expanding, and reaming operations on metals and other materials. It can be widely used in a single-piece or mass-produced instrument industry, machinery manufacturing, and repair parts. The motor has increased power, which is to increase the life of the motor. which has high hardness, high wear resistance, anti-corrosion, anti-rust performance, and long service life, Manufacturer: ZXZZAS