This Heavy Duty A-Frame Coupler Fits 2 5/16 inch balls and is rated for 10,000 pounds of towing capacity. This Trailer coupler allows for standard 3 Bolt Hole mounting of A-Frame Jacks. This product would typically already be welded to your trailers frame, and in most cases painted to match the rest of your frame. The most common cases for replacement would be damage to the coupler latch itself or severe corrosion. Replacement would require cutting and welding.