Apex Tool JCM31037 Jacobs 513-2M 3/8" Mount(32474) PACKAGE

13mm (1/2") Capacity Hand-Tite® Keyless Drill Chuck with 3/8-24 Mount. Split Bite Jaw: Increases Grip Over Standard Bite Chucks By Providing More Contact with the Bit. Superior Gripping Force: Provides High Mechanical Advantage to Convert Hand Tightening Torque Into Superior Bit Gripping Force. Hammerlock® Mechanism: Positive Locking Mechanism Prevents Loosening in Hammer and Other High Vibration Applications. Anti-Lock Nut: Prevents Chuck From Locking Open. Versatility: Models Available to Fit All 10mm (3/8") and 13mm (1/2") Variable Speed Corded and Cordless Portable Drills.