Torx, Spline & Hex Screwdriver Bit Set, 40 Piece - 

40 pieces hex, star and spline bits kit, includes 2 pieces chrome vanadium 3/8" and 1/2" drive sockets. Manufactured from alloy steel material for high strength and durability, high quality standards. All of the bits, with the exception of a few of the larger bits, share the same 12mm diameter hex base, which allows for 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. All parts are well packed in a blow moulded case for easy storage and transportation, and the storage case displays the bit sizes next to each housing.