This unit is available for bumper pull & towable trailers with a lifting capacity of 6,000 lbs. and 16″ of stroke. The pump is equipped with a manual override screw drive pump for operation in case of power failure. Unit comes complete and ready to install. It also has simple rocker style switch control and built-in key for safe lockout of the jack to protect you against theft. This the only hydraulic bumper pull tongue jack equipped with these features. This is an easy installation for tongue jack applications.