Simply thread rope through the ProGrip rope cleat and the spring loaded cam tightly grips rope without knots. Easy to use and easy to release. The multi use rope cleat machined from solid aluminum resists corrosion . Cam lock action secures rope up to 3/8 in. diameter and mounts to the stake pocket of most equipped pick-up trucks. Folds flat and tucks into the stake pocket when not in use for a flush mount installation. Works great with our 3/8 in. CHP truck rope.