This Auto-Release cleat from Sea-Dog solves the problem locking down a rudder blade, yet allowing it to flip-up if it hits an obstacle in the water. The cleat holds ropes securely and will release them immediately when the cleat is overloaded. Once tripped, it can be easily reset in seconds by just pushing the cleat back down into its base. Cleat is fitted with an adjustable cam so that the release tension can be set to suit the boat and local conditions. The cam is adjusted until the rudder blade is held down reliably under maximum sailing conditions. Can be fitted to virtually all lifting tillers and can also be used to protect center boards. For 3/16" - 1/4" rope. Uses #8 FH fasteners. 2-5/8"L x 7/8"W. 1-13/32" in between mounting holes.