This Set Includes 7 Piece Hex Bits, And One 1/4" Bit Holder. The Bit Sizes Are: T-10, 15, 20, 25, 27, 30, And 40. Each Bit Is Cradled In It's Own Compartment In The Plastic Holder. It Keeps All Pieces Neat And Organized. No More Digging Through The Tool Box To Find The Right One.* 8 Pieces In Set * Sizes, 10,20,25,27,30 & 40 * Comes With 1/4" Bit Holder * Includes Storage Rack * Tamper-resistant