With 6 hp motor, CartCaddyHD Chain Drive can provide up to 2,000 lb of horizontal push/pull force for heavy cart and equipment pulling applications. Getting traction by transferring load weight to drive wheels via 5,000 lb hydrolic lift kit, mover works well on carts with casters or carts on rails that go straight forward or backward. Heavy trailers with lots of tongue weight can also be easily lifted and moved.