DEWALT DWAX100 31pc Screwdriving Set consists of (31) S2 modified steel bits for increased durability. The extra small Tough Case is perfect for portable and organized storage of this set. The magnet bit tip holder accepts 1-Inch scewdriving bits. Set contains: Ten (10) 1-Inch Phillips Bits: (2)PH1, (6)PH2, (2)PH3, Ten (10) 1-Inch Square Bits:(2)SQ, (6)SQ2, (2)SQ3, Five (5) 1-Inch SL Bits: SL6, (3)SL8, SL10 and Five (5) Star Bits: T15, (2)T20, (2)T25, along with a Magnetic Bit tip Holder. Magnet Bit Tip Holders Holds 1-Inch Bit Tips.