This chock/cleat mounts on 1-1/4" x 3/16" (70-75) or 1" x 1/8" (70-74) genoa T-track so you can place it where you want it. Simply pull up on the spring-loaded locking pin and slide the cleat into its new position.¥ Easy adjustment¥ Ideal for spring lines, fenders, tenders, tying to a dock or rafting up¥ Versatile, sliding cleat or chock for two sizes of T-track¥ Sleek, elegant design with mirror polish