About this item High Quality & 30 Differerent Bits: Made of strong and durable chrome-vanadium steel, you have no need to worry about rusting. 30Types Bits: Torx( 4,5,6,7,8,10,15,20), Hex( 1.5,2.0,2.5,3.0,3.5,4.0), Slotted( 1.3,1.5,2.0,2.5,3.0,3.5,4), Phillips( 00,0,1,2), Tri-wing( 2.0,3.0), Triangle(3.0), Pentalobe/Star( 1.5), U-type( 2.6). Wi..