The TrailerCaddy 6k 36v is manufactured for moving king pin, pintle, and covered equipment trailers, as well as campers up to 50,000 lbs. The TrailerCaddy Tractor Trailer Pusher has a 6000 lbs hydraulic lift kit designed to lift up king pin, ball, or pintle hitch type of trailer connections. The most common environment requiring a TrailerCaddy 6k 36v are RV and camper dealerships, military bases, and vehicle maintenance locations at government repairs centers.