Quick Draw Fender AdjusterFeatures:Tightly holds to bow rails, grab rails, lifelines, cleats, and more!Instantly adjust the height of your fender with a push of a buttonStainless steel screws and internal springFits 1/4" - 1/2" fender linesTwo Quick Draw Hangers can be used together to horizontally hang a Big B, Storm Gard, or Hull Gard fender.