Description Description: 360 Degree swivel quick release boat hinge with pin bolt Easy to install and remove, surface mount and can be mounted on the side or top It snaps into base and stays attached to boat when seperated High polished surface for mirror-like appearance and to match modern watercraft/boat/yacht Strong corrosion resistance and durable in saltwater circumstance Specification: Material: 316 Stainless steel Color: Silver Bottom Length: Approx. 3.15 inch/8 cm Hole Diameter: Approx. 0.2 inch/0.5 cm Two Holes Center Spacing: Approx. 2.48 inch/6.3 cm Height: Approx. 1.18 inch/3 cm Package Includes: 1 Piece Boat Hinge Mount (with Pin Bolt) Note: Please allow slightly difference due to manual measurement. Color may be slightly different since different monitor. Thanks!