115 Piece High Speed Steel Drill Bit Set with IndexThis 115 piece high speed steel drill bit set includes industrial quality fractional, lettered and numbered bits in a heavy duty steel drill index. The high quality black industrial finish keeps the bits rust free and ready for heavy use. High speed steel 29 fractional sizes 1 16 in. to 1 2 in. by 64ths 26 letter sizes A to Z 60 numbered wire gauge sizes 1 to 60 Convenient drill index 118 deg. tips Fractional sizes: 1 16 in, 5 64 in, 3 32 in, 7 64 in,