[Special Drain Pipe for Waste Disposal] The kitchen drain pipe specially designed for double sinks is 40mm and the thread diameter is 45mm. 【P-Siphon Sink Drain Kit】The 1 1/2 dedicated waste disposal drain adds an automatic shut-off valve to prevent sewage from overflowing during garbage disposal. 【Visual and Anti-Odor Drainage】Our drain pipe has a visible and odor-proof sealed design, and the transparent cup can be removed and cleaned, which is doubly odor-proof, isolating odors and preventing valuables from falling in. 【Multifunctional Drain Adapter】Our kitchen drain comes with an adapter that can be connected to multiple drainage devices, such as dishwasher drain, overflow pipe, water purifier, etc. 【Material 【Thickened】The thickened PP material is more durable, and the internal reinforcement can be bent and stepped on at will without breaking, resistant to high temperatures and anti-aging. The odor-proof cover is compatible with three types of drain outlets (30mm, 40mm, and 50mm).