Two Stainless Steel Top Bimini Deck Hinges with Pin and Ring . Deck hinge features a flat base for deck mounting and Spring-loaded stainless steel pin for easy top removal All welded seams are smooth and surface has a highly polished finish. Length is 2-1/4", wodth is 3/4". Pin Diameter is 0.2". Installs with #5(M5) screws (sold separatedly)