Sioux Chief's popular closet flanges featuring the corrosion-resistant stainless steel ring now have a stronger ring design. The new ring is featured on all Sioux Chief closet flanges featuring a stainless steel ring, including the TKO, Push-Tite, Drop-Kick, Full Flush and standard closet flange. The stronger ring works with Sioux Chief's innovative Plumb Perfect closet bolts as well as standard brass bolts. The ring features rolled inside and outer edges to form a 90-degree foot. Sioux Chief Mfg.