Specifications:Landing gear/ landing gear for trailer /trailer jackModel:CL22TA.S??Application: Especially designed for semi-trailer and truckFeatures: Trailer landing with outer gear box, static load 60t, dynamic load 22t, dual drive, four types of feet interchangeable.
link:http://www.yztym-china.com/landing-gear/22t-landing-gear/22t-outer-gearbox-landing-gear.html