NON-CORROSIVE: 300 series stainless steel posts and pintles STA-TITE: Commercial Fastening System NO CALLBACKS FOR LOOSE SEATS: The STA-TITE Commercial Fastening System installs with a snap and will never come loose or wiggle COMMERCIAL PLASTIC: ideal for any commercial application and resists chips, wears and stains FITS ALL ROUND TOILETS: Including Kohler, American Standard, TOTO and many more PROUDLY MADE IN THE USA: With Earth friendly materials and processes