100 pcs power drill&bit set material:hss, carbide tip, tct 100pcs power drill&bit set*21pcs hss titannium coating drills*8pcs masonry drills*8pcs wood working drills*6pcs wood working flat bit*4pcs hole saws*1pcs hole saw mandrel*12pcs 50mm length bitsslotted:4.5, 5.0, 6.0mm phillips:PH1,PH2,PH3POZIDRIV:PZ1,PZ2,PZ3 Tox:T15,T20*21pcs 50mm length bits:slotted:4.0, 5.0, 6.0, 7.0mm phillips:PH1,PH2, ...