Material: stainless steel and plastic, compact design,easy to install The package includes 1 pairs of hinged blind hole fittings with universal expansion rubber bolts and nuts with washers and 2 pieces spare expansion screws The pin that enters the seat has a diameter of approximately 8 mm.ideal for most standard toilet seats with a fixed hinge at the top The lid of the toilet lid is sturdy and durable, easy to disassemble and install Note: Before purchasing, please check the product image to confirm the specifications and style.Make sure that the height and diameter of the product are the same as you need, Weight: 0.1322773572 pounds, Manufacturer: MAMAtoilet