Metal Heavy Duty 1/2-20UNF 13mm Keyless Drill Chuck Hex Shank/SDS/Socket Square Female Adaptor Hardware Tool ProfessionalSPECIFICATIONS Type: Drill chuck adapter Suit to: Impact wrench Hammer Electric drill Suit to: Hex SDS Plus adapter Power: Manual Origin: Mainland China Number of Jaws: 3 Brand Name: PT CLUB Details: Instantly convert impact driver to hold non quick change drill & driver bits. Keyless chuck finger tightens for easy bit changes. Class 3 Jaw Design Allows you to effortlessly hold round shank drill bits from 1. 5mm to 13mm securely. Greater clamping