... Rectangles, Triangles, Spheres etc.) that can be inserted into cutting tools, drilling bits, reamers, wire drawing dies, and other wear-resistant ... with coarse grains. Specifications:TSP diamond for oil drill bits are suitable for oil&mining fields, cutting tools, wire ... coated cutters, etc. It can be applied on the drill bits for oilfields. Available Shapes:Triangle, cube, cylinder, special shapes ...