1.5?13mm 12?20UNF Key Type Drill Chuck with Square Shank Four Pit Conversion Connecting Rod

Features: The adapter allows this drill chuck to mount on electric hammer so as to convert electric hammer into a power drill. Classic keyed 3jaw design securely holds a wide range of twist drills conveniently. 1.513mm drill chuck clamping range, 1220UNF mounting threads at the back of the chuck. By using specialized antithrust bearing to convert keyapplied torque into superior gripping. The clamping jaws are specially treated to improve wear resistance. All metal construction for long durability. Specification: Material: Steel Clamping Range: 1.513mm Mounting thread: 1220UNF Package list: 1 x Drill Chuck 1 x Key 1 x Square Shank Adapter .The adapter allows this drill chuck to mount on electric hammer so as to convert electric hammer into a power drill. Classic keyed 3?jaw design securely holds a wide range of twist drills conveniently. 1.5?13mm drill chuck clamping range, 12?20UNF mounting threads at the back of the chuck. By using specialized anti?thrust bearing to convert key?applied torque into superior gripping. The clamping jaws are specially treated to improve wear resistance.