1/2" Keyless Drill Chuck Replacement 1/2 x 20 UNF 13MM fits Dewalt Black Decker
1/2"-20 UNF spindle thread. 1/2" Keyless Chuck fits most drills with a 1/2" motor shaft. Chuck threads onto your existing drill shaft. Serrated chuck for maximum drill bit holding. Easy Grip body for increased drill chuck closure torque.