Providing a complete line of drilling motors ranging from 1 11/16"OD to 11 1/4"OD(95,120,165,172,185,197 ... a complete line of drilling motors ranging from 1 11/16"OD to 11 1/4"OD(95,120,165,172,185,197 ... section.Comparing with common motors ,they are greatly inceased in output torque and power,which help to increase penetration rate markedly ...