• 1/4", 3/8" & 1/2"-drive adapters with hex shanks fit any drill chuck or extension adapter
• Use your regular sockets with cordless or electric drill for super-fast nut & bolt run-down or removal
• Durable heat-treated Chrome-Vanadium steel--same material used to make truck transmission gears
• Standard square anvils with spring-loaded steel ball-bearings hold sockets securely
• Can also be used with socket extension bars and flex extensions. 3"L, 1/4" shank

A must-have accessory for every professional and DIY toolbox; inexpensive and effective way to increase usefulness of your power drill. One-year warranty and Jack's Tool Shed worry-free Satisfaction Guarantee.