Deodorization Silicone Core Sewer Pipe Seal Toilet Stainless Steel Feature:Stop smelly drain and backflow with Anti-Odor Drain Backflow Preventer This inexpensive device will save you both from costly repairs and a lot of grief from cockroaches, noise, and overflow Simply install it in seconds. It fits easily to your existing drain. No plumbing and no tools required PREVENT BACKFLOW: prevent the drain water from backing up to the room; anti-water leakage and overflow.ANTI-ODOR INSECT PREVENTION: seal stinky smell from sewage gas, filter with the automatic closing design.V-CUP SHAPE: ensuring the smooth draining and water flow rateS-SHAPE CLOSING DESIGN: folding wrinkles between the binding, increase the tightness and compactness; strongly prevents smell and bugs.DURABLE ANTI-RUST: no worry about deformation after stretching, super flexible and wear-resistant.EASY TO INSTALL: install in seconds, no tools required.WIDE APPLICATION: can be connected with the underground septic tank, sewage, used with floor drain of the shower room and basement, effectively can be used to be installed in the PVC pipes ECO-FRIENDLY SAFE: made of good quality silicone, totally environmental-friendly material Specifications: SIZES: A:50 mm x 95 mm,B:50 mm x 60 mm,C:45 mm x 95 mm,D: 38 mm x 95 mm, MaterialStainless Steel + Silicone Notes: Please allow 1-3cm differs due to manual measurement.Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understanding. Package Include: 1 x floor drain