Total Knockout 3 In. Hub/inside 4 In. Abs Toilet Flange Flange W/ss Swivel Ring

Total knockout (TKO) closet flange with stainless steel swivel ring. 3" hub/inside 4", flush to floor. The diameter of pipe can vary significantly. These flanges are designed to fit inside most, but may not fit all types of pipe. Knockout will not break apart and cannot fall down drain pipe. Easier installation, no need to hold knockout while hammering.