The dewalt dt71540 high performance brushless screwdriving set is an impact bit set suited to impact screwdrivers and drill drivers alike it is supplied in a robust small tough case for safe storage and easy accessibility to screwdriving accessories one pair of protective sunglasses are included contains 23 x 25mm pozidrive screwdriving bits pz1 4 pz2 14 and pz3 515 x 25mm phillips screwdriving bits ph1 4 ph2 7 and ph3 42 x 25mm torx screwdriving bits t30 22 x 25mm slotted screwdriving bits sl6