... /8"(346mm),14 3/4"(374mm), 15 1/2"(394mm)16"(406mm), 17 1/2"(445mm),18"(457mm), 26"(660mm)Model ... pumpMaterialAlloy steel, carbideDelivery termsBy sea or by airapplicationPetroleum and gas, water well, mining and tectonic industries, oil field, construction, geothermal, ... different tooth shape, tooth density and tooth exposure height. 17 1/2" milled tooth tricone bits for well drilling mine drilling ...