The Oatey Set-Rite® Spacer Kit includes four individual spacers that eliminate leak paths caused by improper double stacking of wax with spacers. This spacer kit is the only patented and UPC listed flange extension product acceptable for repair and remodels. The four individual spacers can be stacked to any height or can be snapped in half to support an existing closet flange. Oatey products have earned the trust of plumbing professionals for over 100 years.