Odor-proof shower drain plug Backflow preventer with magnetic closure valve Trim to Fit Any Drain Opening Size Hair catcher Multi-Channel sealing ring Inner magnetic valve Exceptional Durability Anti-Odor and Backflow Prevention Design: Advanced magnetic valve ensures smooth drainage while effectively blocking sewage backflow and odors. Exceptional Durability: Constructed from premium PPS material for strength and longevity. Easy Installation: No complex tools required, with a universal interface that fits most standard pipelines for quick setup. Customizable Sizes: Can be tailored to specific length or diameter requirements, adapting to diverse installation scenarios. Efficient Drainage: Optimized internal channel design and large-caliber structure enable fast water flow without accumulation.