The X2020 hinge is made of a durable black plastic and uses the t-nut and screw system of the X2020 rail system. The hinge is designed so the two pieces of extrusion can be made flush when seated making it ideal as a lid for light tight boxes. The hinge is sold on its own and the t-nuts and screws must be purchased separately. Base Lab Tools suggests using four of our CSB-M5-08 button head screws with our X2020-DT-M5 T-nuts to secure and set each hinge.