Package: You will get 4pcs 12 inch piano hinge, with screws, enough to meet your needs. The piano hinges offer continuous supports along the entire length of the door and lid for durability; Each knuckle of continuous hinge is a load-bearing point, providing uniform strength and smooth pivot action; friction-type pins won't fall out. Continuous hinges have countersunk holes, suitable for uninterrupted support along the entire length of connected parts supported surface mount applications. The hinges are made of stainless steel with polished surface, rust proof and durable ; stainless piano hinges are more corrosion resistant than zinc and other steel hinges. Widely used in wood working project, RV project and other DIY applications, such as folding t.