... inserts 1.high temperature 2.wear resistance 3.high hardness TSP drilling bit inserts from Henan Union Abrasives Corp with super ... ,2*2*10,3*3*10,4*4*10,etc.Triangle :4*4*4*2.6,4*4*4*3,6 ... .3,8*3,10*2,10*3, etc. Application: Different TSP products with different performances of wear-resistance, toughness, self-sharpening ... . It can be applied on the drill bits for oilfields. TSP drilling bit inserts