... products:1.stocks adequate, time delivery2.rich experience in drill bit3.good after-sales service4.long work life5.Cutter's ... quality performance is good ,6.Strong resistance to abrasion and impact resistance. 7.competitve price Detailed Product Description:specifications (mm)8 ... we can supply rock bits, tricone bits, steel PDC bits, drill bits, TCI bits,drilling bits, oilfield bits, steel tooth bits ...