Oatey 42778 Snap Grommets, 3 4-Inch, Stainless Steel oatey products can be found in residential and commercial applications and have achieved excellent brand Name recognition with consumers All products are backed with the highest quality technical and customer support programs in the industry Highly durable product 3-Inch Spigot Closet Flange fits inside the hub end of 3-Inch Schedule 40 DWV fitting 4-Inch Spigot Closet Flange fits inside the hub end of 4-Inch Schedule 40 DWV fitting Solvent weld into fitting-short throat length is perfect for use in tight spaces and where the fitting is close to the sub-floor Four mounting slots for proper fit and alignment of closet bolts to the toilet