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