oil drilling tips include:YG4C,YG6,YG8,YG8C,YG9C,YG10C,YG25,YG11C,YG13C,YG15C We have many mine tools drawing for the tungsten carbide button.The mine tools is one of our main manufacture products.oil drilling tips TypeDimensionDHRhαeQ0810-28.010.04.04.07°30'1.0Q1012-210.012.05.05.5Q1014-214.07.5Q1118-211.018.03.612.029°Q1120-220.05.014.015°38'Q1216-212.016.06.010.07°30'