BOTEMY Kitchen Sink Flanges and Stoppers are made of 304 Stainless Steel, more reliable, durable and easy to install. The disposal flanges fit all InSinkerator, Badger, Kitchenaid, Kohler and all other kitchen sink waste disposals and standard kitchen sink drains(3.5"-4" opening).The stoppers with rubber rings are easy to put and take. Prevents kitchen garbage and other unwanted items from entering the kitchen drain, better protects your sewer, and keeps kitchen sink neat to easy to clean. PREMIUM MATERIAL: Kitchen sink flange is constructed of 304 grade stainless steel for durable, corrosion and rust resistant. Longer service life, value for money UNIVERSAL DESIGN COMPATIBILITY?Garbage disposal flange stopper fits most standard 3-1/2" diameter rubbish disposals and sinks for seamless integration with existing sink and waste disposal systems SECURE EFFICIENT SEAL: The sink stopper is designed to fit snugly into the sink flange for garbage disposal to form a tight seal that prevents food debris from escaping into the disposal, reducing clogging risk and keeping your kitchen clean EASY TO USE: The garbage disposal flange kit is designed to be easy to use, with a simple push-and-twist mechanism that allows you to quickly and easily seal off the disposal when you needed, enabling you to easily fill the sink or wash the dishes SIMPLE INSTALLATION: The disposal sink flange and kitchen sink stopper are easy to install with no special tools or skills required. Simply screw the sink flange onto the disposal and insert the sink plug into the flange