Integral Drill Chuck Keyless with Straight Shank Lathe Hardware Tools Accessories APU13R87/16

1、Using straight shank integrated design come with high accuracy and good rigidity 2、Automatically tighten keyless device which can automatically increase the clamping force 3、Key parts of drill chuck come with special quenching treatment to improve durability 4、Adopt 40Cr material possess high tensile strength yield strength and hardenability high fatigue strength and good toughness 5、The hardness is 40HB clamping range from 1?13mm and the applicable machine tool is a milling machine