... drilling bits. Thermal Stable Polycrystalline Diamond TSP Description:Thermal stable polycrystalline diamond, is produced by sintering diamond particles and metal bonds at ... 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 ... 2*6.2*6.2*4.3,etc.Cylinders:1.5*4,1.8*4,2*4,3*8,4* ... on the drill bits for oilfields. Thermal Stable Polycrystalline Diamond 10*3.5*3.5