This model right here is the original and the best you can find

Cable gauge included

Voltage  12 VDC / 24VDC Capacity 1500lbs / 2000lbs Stroke Range 3in

102 20 1 10

Specifically designed to move in either direction on the track

Kinedyne Standard Galvanized Sliding C Channel Winch Category_Individual Safety Harnesses This model right here isKinedyne have designed their Standard Galvanized Sliding C Channel Winch with strength at its core, enabling it to cope with loads of up to 6670lbs. Manufactured from heat treated carbon steel with a rust resistant galvanized coating for added protection against the elements, this Sliding C Channel Winch features an easy to reach thumb pawl even when operating with heavy duty gloves on. Engineered to meet the required standards, each unit is compliant