Shurhold Dock-A Reni Dock. One end of the rope is clipped into the Dock-A-Reni and the other end over the boat hook or pole. This prevents straining your rope every time it's used. The Dock-A-Reni is made of non-corrosive brass and will allow you to use this device for years to come. You can slip the Dock-A-Reni onto any boat pole with ease and it will stay there until you release it. This makes it a very handy tool to have whenever you have a boat tying up and down. Specifications for Shurhold Dock-A-Reni: Manufacturer: Shurhold Color: Black Package Contents: Shurhold Dock-A-Reni Shurhold 134: Dock-A Reni Dock