Cross Drill Bit Tools 1, Factory supply drill bit 2, Best steel made 3, One set drill bit can use at least 3 months. Cross Drill Bit Tools1, Factory supply drill bit2, Best steel made 3, One set drill bit can use at least 3 months.4, Package: Standard package of exportWe can supply these size of drill bits:30mm, 32mm, 34mm, 36mm, 38mm, 40mm, 42mm, 46mm, 50mm, 55mm, 60mm65mm, 70mmCross Drill Bit ...