100pcs Combination Drill Set Material: Hign speed steel, carbide tipped 100pcs Combination drills setContents: -30pcs HSS twist drills 8×1,1. ... ,5,6; Star T15,20,25,27,30 -10pcs 50mm bits slotted3,4,5,6;PH1,2,3;pz1,2,3 ... saws 32,38,44,54mm-1pc hole saw adaptor-4pcs bits stopper 5,6,8,10mm-20pcs 25mm bitsSlotted 4,4 ... ,5,6;Star T15,20,25,27,30-10pcs 50mm bits slotted3,4,5,6;PH1,2,3;pz1,2,3 ...