Features 1、100% brand new and high quality. 2、Keyless drill chuck for mini power drill, electric grinder. 3、0.3-6.5mm clamping capacity, easily clamp different size of drill bits. 4、Easily locks onto and releases drill bits. 5、Allows hex drive power drill to use conventional drill bits. Specification Features: 100% brand new and high quality. Keyless drill chuck for mini power drill, electric grinder. 0.3-6.5mm clamping capacity, easily clamp different size of drill bits. Easily locks onto and releases drill bits. Allows hex drive power drill to use conventional drill bits. Specification: Clamping Range: 0.3-6.5mm Driver Shank: 1/4" hex shank Package list: 1 * Drill Chuck Package List