The Bluespot 27 piece 1/4" drive Mixed Socket Bit Set is manufactured from Chrome Vanadium with S2 bits for increased durability. The sockets have an anti-slip knurling to provide a secure grip all sockets are 37mm in length and come in Slotted, Phillips, Pozi, Hex, Torx, Spline. Supplied in EVA foam insert. Contents: Slot 4,5.5,7mm Phillips 1,2,3 Pozi 1,2,3 Hex 3,4,5,6,7,8mm Torx T10,T15,T20,T25,T27,T30,T40 Spline M4,M5,M6,M8,M10