1. Can withstand the power of percussion drills, drill holes in 90-degree bends 2. It can withstand a torque of 25N·m and a speed of 1500 rpm. 3. Key chuck, fine rolling teeth, turn the drill bit chuck wrench to adjust the tightness 4. Precise three jaws, firm clamping, strong stability, and the clamping range can be adjusted at will 5. 3124: lengthened self-tightening chuck 6. 3125: lengthened key iron chuck 7. Material: aluminum alloy 8. Size: 3124：15x9x3.5cm, 3125：15.5x9.7x3.4cm 9. Input end size: 3124: 10mm round handle, 3125: 8mm hexagonal handle 10. Clamping: 0.8-10mm 11. Weight: about 485g
