1/4" - 1-5/8", Set Rite Toilet Flange Extender Kit, Designed For Correcting Elevations From 1/8" Up To 2-1/4" On Existing PVC, ABS, Metal Or Stainless Steel Flange Rings & Cast Iron Flanges, Patented, UPC Listed, & Trusted Solution Acceptable For Repair & Renovation Applications To Restore The Sealing Surface Of The Flange.