Quick Pegging Chuck: Screwdriver Chuck, 3/8-24unf 0.8-10mm, Keyless Drill, Chuck, Adapter, Quick Change Hardware, 1/4" Converter Adapter, Industrial Power, Chuck, Chuck , chuck, adapter, variable speed, home improvement tool Unique locking function: screwdriver chuck adapter, the keyless chuck vise has a unique locking function, breaking the method of traditional lock with ratchet teeth, the lock piece is installed in the rear socket, the lock circumference is longer, more effective to prevent loosening during work, so that the chuck is in the most reliable clip when you hold the tools. Good metal structure: hexagonal shank, the clip of the keyless chuck has a good metal structure, the coating surface is comfortable. Unique axial bearing: chuck self-tightening 3/8, the unique thrust bearing makes it easy to convert the torque applied by the handle to a stronger clamping force. Quick change: 10mm chuck, the keyless keyless chuck can quickly replace the adapter converter 1/4" with hex shank Shipping quantity: 2 pieces (hex rod*1, clamp*1)