carbide drill tips 1.tunsgten carbide 2.Grade: YG8,YG8C 3.surface: Blank 4.professional manufacturer. Welcome To Yueqing ... ,tips, drill bits, saw tips, triangle tips, square milling inserts, YG8.2 square tips ,SS10 stone breaking tips, wooden working blade ... . carbide drill tips SPECIFICATION: 1.Material:Tungsten Carbide &Cobalt2.Grade:YG6,YG8 etc3.Type: different size and type can be chosse 4 ...