Easy to use bounce drain pipe can clean hair and debris on the drainpipe to avoid logging double seals to avoid the oval shape of the installation hole of the ceramic basin and cause water leakage. Free 50cm long pipe, can clean the hair and debris in the drain, avoid clogging. We offer two bouncing cap seals as spare parts. When the bouncing cap ages, it can be replaced.Suitable for basin diameter: 44-46mm, the thickness of installable sink: 38mm, without having to install new drain pipes.