This 400mm Through Post Hinge Set suits large timber postsFully adjustable to lower or raise the height/angle of your gate as your post moves over time. It features a return pin that provides extra stability and ensures your hinge will not loosen in the post over time. Supplied with a nylon hinge bush to reduce wear and avoid steel to steel contact increasing the life of the coating.The pack includes a screw ring fastener that will provide lick-proof security.