Text: GEOTRACK Industrial Actuator - AC/DC Ball/Acme Screw Actuator, Clevis to Clevis, Load: 25 - 1000 LBS, Stroke: 4" - 24", Brake, Clutch, Limit Switch or Sensor available, Different gear ratio for speed URL: http://www.sat-city.com/Gentact/1998_03_12/