Air circulation improvement Made from PP material, this sink drain pipe helps prevent odors and backflow while ensuring constant air circulation to keep bathroom air clean. Adjustable design Innovative adjustment design enables efficient space utilization, adapting to unique installation requirements and saving space. Prevent clogging Equipped with a built in hair filter, this drain pipe helps avert blockages, reducing maintenance costs and protecting your drainage system. Convenient installation No professional tools are needed. Follow the included instructions for quick, easy installation without assistance. Available in 3 sizes for added flexibility. Use scenarios Small bathrooms with limited under sink space: the adjustable length fits standard plumbing configurations without crowding the area. Homes with long hair or frequent bathroom drain use: the built in hair filter reduces clog risk and lowers maintenance needs. DIY remodels or rental properties: tool installation speeds up setup and ensures a reliable upgrade that can be adjusted to fit different drain sizes with the 3 size options.