Product name: Sewer pipe anti-odor preserve Material: PC+rubber Size: as proven Feature 1: Double-layer silicone Feature 2: Prevents micro organism Feature 3: Efficient drainage Package includes: 1pcs Home odorless, brand new taste, clean to install, and may be used anywhere. Large opening, extensive displacement. Direct discharge of water is faster. Easy to put in and fits 98% of sewer pipes.