They are “T” fasteners, and a slotted holder that screws to the top of your boat fender. One on each side. The “T” slides on the cover strap to hold down, the cover at the fender. Call Deans and they will tell you how to position them. I agree–they need instructions as to installation. Not hard, but they are not intuitive as to location and function, either. Mike Whitten/Germantown, TN