[Question: it rust? Answer: No]: Bimini Top Deck Hinge with Quick Release pin is made of stainless steel. In humid air or high-temperature weather, stainless steel has stronger anti-rust, abrasion resistance. [Specifications]: SIZE: 2.24 inch long x 0.7 inch wide, 1.45 inch high 90° deck hinge, 1.55 inch is the distance between hole center and hole center. [How to choose the right size?]: The maximum width of our Bimini Top Deck Hinge is 0. inches (7.7 mm). If your bimini top cap is larger than this width, it not be installed. Please check the size of your bimini top cap carefully. Bimini Top Deck Hinge with 1/4inch( 0.25 inch) diameter Removable Pin, it can be replaced with Thorn Pin / Drop Cam & Spring Grip. [Applications]:For boat, bimini top mounting hardware, kayak, canoe rigging, etc. Besides, it is also very good for holding down or connecting some things. Colour:silver Material:Stainless steel Package Contents: 4 x Bimini Top Deck Hinges Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.