The Ryobi 127-Piece Drilling and Driving Kit offers a wide variety of bits to cover countless drilling and driving applications. The driving bits come in Phillips, slotted, hex, square and Torx, while the black oxide drill bits range in size from 1/16 in. to 1/4 in. This kit also comes with seven differently sized nut drivers and a compact magnetic screw guide for ease of use. Includes 13 black oxide drill bits: (4) 1/16 in., (2) 5/64 in., (1) 3/32 in., (1) 7/64 in., (1) 1/8 in., (1) 9/64 in., (1) 5/32 in., (1) 3/16 in., (1) 1/4 in; (81) 1 in. insert bits: (2) P0, (2) P1, (8) P2, (2) P3, (2) SL4, (2) SL6, (2) SL8, (2) SL10, (2) SL12, (2) hex 1/16 in., (2) hex 5/64 in., (2) hex 3/32 in., (1) hex 7/64 in., (1) hex 1/8 in., (1) hex 9/64 in., (1) hex 5/32 in., (1) hex 3/16 in., (1) hex 7/32 in., (1) hex 1/4 in., (1) hex 1.5 mm, (1) hex 2 mm, (1) hex 2.5 mm, (1) hex 3 mm, (1) hex 4 mm, (1) hex 5 mm, (1) hex 5.5 mm, (1) hex 6 mm, (2) SQ1, (5) SQ2, (2) SQ3, (2) T6, (2) T7, (2) T8, (2) T9, (2) T10, (2) T15, (3) T20, (6) T25, (2) T27, (2) T30, (2) T40; (25) 2 in. power bits: (2) P1, (5) P2, (2) SL8, (4) SQ2, (2) T20, (3) T25; 1 compact magnetic screw guide; 7 nut drivers: (1) 5/32 in., (1) 3/16 in., (1) 7/32 in., (1) 1/4 in., (1) 9/32 in., (1) 5/16 in., (1) 3/8 in.