... metal bonds at high temperature and super high pressure, with good performance for oil/mining drilling bits. Different shapes ... *2*10,3*3*10,4*4*10,etc.Triangle :4*4*4*2.6,4*4*4*3 ... 3,10*2,10*3, etc. Application:Different TSP products with different performances of wear-resistance, toughness, self-sharpening & ... drill bits for oilfields. Thermal Stable Polycrystalline Diamond with Fine Tolerance Control