The BoatBuckle Snap-Lock Boat Cover Tie-down is easy to use. Simply pass adjustable end of this tie-down around trailer frame, snap buckle together and pull adjustable end snug. Measures 1 inch by 4 feet. BoatBuckle brand tie-down systems offer professional fishermen and weekend boaters convenient, high quality tie-down systems so they can spend more time on the water and less time on the boat ramp. IMMI is the leading marine tie-down manufacturer in North America.