Staffa HMC two speed piston motor 1.Low speed,high torque 2.Completely interchangeable with original ... . Wide range option of displacement7. Switchable displacement while the motor is running8. Switch option: electromagnetic, manual, automatic. 9. Wide applicable for marine ... HMC080,HMC100,HMC125,HMC200,HMC270,HMC325 two speed hydraulic piston motor