Our company supplies a complete range of test oil mud motor models covering full-size wellbores to meet diverse drilling tool requirements: micro-hole mud motors with an outer diameter as small as 43 mm; corrosion-resistant mud motors suitable for saturated saltwater mixed diesel mud; gas/foam mud motors for underbalanced operations using air, nitrogen, diesel exhaust, foam, aerated mud and more; and a full-size lineup of equal-wall-thickness mud motors.