Superior Electric J016 Mini (0.5 to 8 mm) Keyless Drill Chuck with 1/4" Hex Shank Adapter. Use this chuck to convert any cordless screwdriver that has a  1/4 " hex drive into a drill or grinder.

Features:

• Quickly convert your quick change hex shank driver into drill!
• Keyless chuck finger-tightens for easy bit changes
• Unlimited Use in Automotives, Garages, Warehouses, Offices, Homes etc.
• AN IDEAL ACCESSORY: Turns any 1/4" cordless power screwdriver into a drill or grinder to quickly switch tasks and keep the job moving
• EASY ON AND OFF: Keyless chuck converter to go from driving to drilling in seconds
• KEYLESS DESIGN: Chuck securely holds round-shank drill bits

Specifications:

• Color: Black
• Shank: 1/4 inch (6mm)
• Clapming Range: 0.5-8mm
• Thread Mount: 3/8-24
• Overall Length: 2-3/8"
• Chuck Dimensions: 1-3/8" length x 1" Dia
• Shaft Length: 1"