• Keyless hand-tight three jaw design fits most drills with 3/8" threaded shaft
• 3/64" to 3/8" (1.0-10MM) capacity, Hardened jaws
• Drill chuck easily replaces your defective drill
• 3/8" - 24 UNF mount, Easy Grip body for increased drill chuck closure torque.

Features: -3/8" x 24 UNF Thread. -The Jacobs® keyless chuck higher gripping torque than standard key chucks and there is never a key to misplace. -They feature a non-rusting, high performance body with a unique sure-grip sleeve for maximum user comfort and hand tightening efficiency. -3/8" Keyless Chuck (Jacobs)