• Maximum Drill Chuck Capacity (Inch): 5/16"
• Minimum Drill Chuck Capacity (Inch): 0
• Mount Type: Threaded Mount
• Mounting Size: 3/8"-24
• Self-tightening for higher clamping torque
• High percussion design
• All metal construction for extended life
• Jaws and bodies are hardened and ground
• Rapid clamping and releasing without use of a wrench