Corner recessses on drive ends ensure torque is transmitted to the flats instead of the corners, which reduces slipping and rounding
The Steelman 8-Piece 1/4-Inch and 3/8-Inch Drive Star Bit Socket Set is a great addition to any tool box or socket collection. These bits, machined from high-strength S2 steel with a polished chrome vanadium steel socket, allow you to tackle a wide range of projects. Star shaped fasteners are common in many automotive applications, and these sockets exceed ASME performance standards! Contains the following sizes: 1/4-inch drive - T15, T20, T25, T27, T30; 3/8-inch drive - T40, T45, T50.