1/2"D ball ended Hex socket bits: 4, 5, 6, 7, 8, 10, 12mm; overall length: 100mm, bit length: 62mm.1/2"D ball ended Star* socket bits: T20, T25, T27, T30, T40, T45, T50, T55; overall length: 100mm, bi more→t length: 62mm.1/2"D ball ended Spline socket bits: M5, M6, M8, M10, M12; overall length: 100mm, bit length: 62mm.Ball end for greater access, ideal in tight areas or where an obstruction prevents direct access to fasteners.Sockets manufactured from chrome vanadium, bits from impact grade S2 steel.