Attributes . (1) Reusable Concrete Cap, (1) Reducing Ring for the 2 Inch Hubs that Can be Reduced Down to 1-1/2 Trade Size and 1-1/4 Inch Trade Size Openings, (1) Reducing Ring for the 1-1/4 Inch Hubs that Allow to be Reduced to 1 Inch Trade Size Opening or 3/4 Inch Trade Size Opening . Names