For 444.5mm Tricone Bit, everyone has different special concerns about it, and what we do is to maximize the product requirements of each customer, so the quality of our 444.5mm Tricone Bit has been well received by many customers and enjoyed a good reputation in many countries. Hejian Hengji Bit Manufacture Co., Ltd. 444.5mm Tricone Bit have characteristic design & practical performance & competitive price, for more information on the 444.5mm Tricone Bit, please feel free to contact us.