The toilet seat screws are made with iron and premium plastic material for long time usage, metal washers and plastic nuts. Strong and durable, can be used for a long time, not easy to damage. Easy installation: you can rotate the nuts to the proper position by hand and tighten the bolts with a screwdriver, which just takes little time, easily replace the old ones. Securely fasten your toilet bowl to the floor, good accessory to repair your toilet seat. Compatibility: The toilet seat fastener replacement hinge bolts universally fit for most standard toilet seat. Suitable for your toilet seat repair or replacement work, they are stable and will not wobble.