Makita B-68339 30 piece bit set, you have the most important bits at your disposal in a handy case. Power bits compatible with any Cordless or Electric 1/4 Hex Shank drive quick change tool Ideal for driving screws in a wide variety of heavy-duty fastening applications Convenient lockable Storage Case 25mm Insert Bits: PH0 , PH1 , PH2 , PH3 , PZ1 , PZ2 , PZ3 , SQ0 , SQ1 , SQ2 , H3 , H4 , H5 , H6 , SL3 , SL5 50mm Bits: PH1 , PH2 , PZ2 , SQ1 , SQ2 , H5 60mm: Bit Holder 75mm Bits: PH1 , 2x Ph2 , PZ2 , SQ1 , SQ2 , H5