Assortment of commonly used drilling and driving bits 102 piece for common household projects contents 20 x hss black oxide drill bits 1x5 15x5 2x4 3 35 4 45 5 and 6mm4 x masonry bits carbide tipped 3 4 5 and 6mm1 x countersink insert bit 127mm3 x phillips 50mm insert bits ph1 ph2 and ph33 x pozidriv 50mm insert bits pz1 pz2 and pz32 x torx 50mm insert bits t20 and t2519 x phillips 25mm insert bits phox3 ph1x4 ph2x8 and ph3x411 x pozidriv 25mm insert bits pz1x3 pz2x5 and pz3x314 x slotted 25mm i