Home Towing & Transportation Trailering Trailer Jacks Foot Plate for A-Frame Jack Marpac Foot Plate for A-Frame Jack $10.99 Foot Plate for A-Frame Jack quantity Add to cart Product Details Product Details For use with 7-1615 A-Frame Jack or similar jacks with 2″ round tube. Supports up to 3,000 lb. Dimensions: 6.7″ x 5″.