Nylon Concave Deck Hinge - BlackDeck Hinges are designed to mount horizontally and attach an eye end secured to tubing in Bimini top applications. Concave Hinges are designed to rail mount on 7/8" tubing. Angled Hinges are used for mounting items on slanted surfaces like sloped gunwales. 3/16" pin size. Constructed of UV stabilized injection molded nylon. Installs with two #10 FH fasteners (not included). Available in black or white.WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.