A quality Set of 40 hex star and spline bits made from Alloy Steel. Includes two Chrome Vanadium sockets. All of the bits with the exception of a few of the larger bits share the same 12mm diameter hex base which allows faster bit changes. Each bit has its size imprinted on the bit itself making it easy to identify them after you`ve removed a handful from the case. And to make tidying up quicker the case displays the bit sizes next to each housing. The set is supplied in a durable and hard wearing snap shut carry case with carry handle which makes it easy to move and store the set without losing components. Packaging colour bmay vary depending on batch Blue / Red / Black. Includes: 14 hex bits. 10 spline bits. 14 star bits. 2 sockets. Detailed description: Hex 30mm long: 4 5 6 7 8 10 12mm. Hex 75mm long: 4 5 6 7 8 10 12mm. Spline 30mm long: M5 M6 M8 M10 and M12. Spline 75mm long: M5 M6 M8 M10 and M12. Star 30mm long: T20 T25 T30 T40 T45 T50 T55. Star 75mm long: T20 T25 T30 T40 T45 T50 T55. Chrome vanadium sockets: 3/8 inch and 1/2 inch. Case dimensions: 32cm wide; 14cm deep; 4cm tall. Alloy steel and chrome vanadium. Tough carry case. Includes 2 sockets.