Feature:1. NOT EASY TO SLIP OFF: Three jaw keyless drill chuck bring firm clamping, not easy to slip off, easy to use and very stable2. CONVENIENT TO USE AND PORTABLE: Impact driver chuck can be tightened manually, which is convenient to use and portable to carry3. SHELL MADE OF CARBON STEEL: The shell of the three jaw chuck is made of carbon steel, has good resistance to atmospheric corrosion and is durable4. MULTIPLE FUNCTIONS IN ONE TOOL: Suitable for the hex chuck of pneumatic tools, electric tools and hand tools, and can be used with drill bits, grinding heads and screwdriver heads to realize multiple functions in one tool5. ELECTRIC GRINDER ACCESSORIES: Used for electric grinder multi function chuck, electric grinder chuck, electric grinder accessories, small electric grinder clamping core, universal clamping coreSpecification:Item Type: Keyless Drill ChuckMaterial: Carbon steelScope of Application: Electric grinder multi function chuck, electric grinder chuck, electric grinder accessories, small electric grinder clamping core, universal clamping coreClamping Range: Approx. 0.6 ~ 8mm / 0.02 ~ 0.31inShank Type: 1/4in hex shank Package List:1 x Keyless Drill Chuck