This DeWalt screwdriver bit set includes 32 25mm professional grade, S2 standard bits of varying sizes, all colour coded based on their size for easy selection. Set includes phillips bits, hex bits, pozi bits, slotted bits, torx bits and security torx bits. A 1/4" adaptor and 65mm quick release adaptor is also included in the set which comes in a handy storage box for great portability.