CURT A-frame jacks are designed specifically for A-frame trailers. They can be bolted or welded directly onto the trailer frame. Though they are not able to swing up and out of the way like CURT swivel jacks, A-frame jacks are made to retract completely to ensure enough clearance for safe travel. It does not matter what kind of trailer you tow -- a boat trailer, utility trailer, livestock hauler or recreational vehicle trailer -- if you have a receiver-style trailer, you will want a jack that complements its function. For a trailer jack that will not steer you wrong, CURT has the answer.