Enjoy both convenience and style with the large wing nut style kitchen sink basket strainer and Insinkerator Style Disposal Flange from Westbrass The wing nut stopper can conveniently be turned to open or close the basket to slow the drain of water Designed for double bowl kitchen sinks with ISE garbage disposals installation Features . Wing Nut Style Large Kitchen Basket Strainer with InSinkErator Style Disposal Flange Stopper. Large wing nut style kitchen sink basket strainer. Fits 3 1 2 in sink openings 4 3 8 in rim diameter. Turn wing nut to restrict draining. Solid brass construction. Do not use plumber s putty for installation use silicone seal Specifications . Finish Powder Coated White. Basket Strainer Tall 2 9 16 . Disposal Collar Deep 1 5 8 . Weight 1 5 lbs