Chrome vanadium steel bits for use with impact screwdrivers and ratchets. Includes Trx bits x 30mm and 75mm: T20, T25, T30, T40, T45, T50 & T55; spline bits x 30mm and 75mm: M5, M6, M8, M10 and M12; hex bits x 30mm and 75mm: 4mm/5mm, 6mm, 7mm, 8mm, 10mm and 12mm, and 2 x adaptors: 3/8" and 1/2".