Features: Stainless steel ball lock ensures a secure fit 1/4 inch snap-lock and non-slip sockets Hex shank prevents stripping when the drill is running at high speed Super strong chrome vanadium steel heat treated for normal and impact applications Application - sandblasted finish Transforms drills into high-speed socket drivers Applies to screwdriver handle or electric screwdriver tools (can be hexagonal hole or three jaw handle) Driven sleeve is used, can be the original hexagonal side when mounted on the square size, which can be used to mount the sleeve, is a good accessory for conversion Specification: Material: chrome vanadium stainless steel Color: black Size: (approx.) 1/4" x 1/4" x 150mm - 1/4" shank can be made into a square 6.35mm 3/8" x 1/4" x 150mm - 1/4 "The shank can be turned into a 9.53mm square 1/2" x 1/4" x 150mm - 1/4" The shank can be turned into a 12.7mm square Quantity: 3 Pcs Package Content: 3pcs x Hex Socket Bits Note: Please allow 1- 3mm error due to manual measurement. Please make sure you don't mind before you bid Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!