Northwest Tarp & Canvas 180 Degree Bimini Universal Deck Hinge, Black Nylon, 1 Pair
Black, Nylon, Universal Deck Hinge 2 Each
2 Black, Nylon, Universal Deck Hinge
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316 Stainless  2 Pack Boat Bimini Top Swivel Deck Hinge 
https://www.amazon.com/vdp/0401122e95754ee0a80ca94f3ee459db?ref=dp_vse_rvc_0
Northwest Tarp & Canvas
{"Package Dimensions": "4.02 x 2.99 x 1.18 inches", "Item Weight": "2.39 ounces", "Manufacturer": "306050-2", "Is Discontinued By Manufacturer": "No", "Date First Available": "May 20, 2013", "Brand": "Northwest Tarp & Canvas", "Finish Type": "Black", "Mounting Type": "Deck Mount", "Number of Pieces": "2"}