Fluidmaster 7110T Secure Cap Universal Toilet Bolt Caps are designed to offer a high quality replacement for broken or lost bolt caps. Built to last from high quality polypropylene plastic material to resist cracks or breaks. The screw-on design ensures the caps won't get knocked out of place and create a watertight seal. This universal design works with most toilets or bolts. Installation is easy - simply remove the old cap and nut, set the base, anti-spin washer and old nut, then screw on the cap. Built durable from high quality plastic. One year warranty.