Makes a greatprimary cleat on kayaks, canoes, fishing boats and pontoons. Also good as a utility cleat on docks, piers, trailers and more. 4″ model handles rope up to 1/2″ dia.3″/3-1/2″ models handle rope up to3/8″ dia.With the easy-to-use lace back design, you can use this gripper cleat for securing your anchor, vessel or any other object without any knots.