Features 1、Using good-quality materials with high-accuracy polishing, possess durability and long service life 2、The product can be used flexibly, and various electric wrenches can be changed at will. One machine with multiple functions, convenient and simple 3、Manual tightness adjustment, rotate the drill chuck to adjust the tightness 4、The product bites the teeth accurately and will not loosen the drilling tool due to vibration or impact 5、Come with drill chuck key wrench, the surface is sprayed and blackening, beautiful and not easy to rust Specification Item Type: Drill Chuck Material: High carbon steel Purpose: Used for electric hammer conversion, drill tool with round handle and triangular handle can be used Products Include: Manual drill chuck, chuck key Clamping Specifications: 3-16mm B16 Package List 1 x Drill Chuck 1 x Chuck Key