Thermal Stable Polycrystalline Diamond 1.High wear ratio 2.Fine appearance and tolerance control Description:Thermal stable polycrystalline diamond, is produced by sintering ... as cylinders, triangles, rounds, rectangles, sharps, cubes, etc. Rectangle:1.5*1.5*3.5,1.5*1.5*4,1.5*1.5*5,2*2*10,3*3*10,4*4*10 ... bits for oilfields. Thermal Stable Polycrystalline Diamond with Fine Tolerance Control