【Leak proof】Come with a transparent rubber mat, which has strong toughness, prevents water leakage and is more reliable. 【Aquarium supplies】Special pvc water pipe connectors designed for aquariums and aquariums.< /p> 【transparent yarn】The polished finish surface has better hand feelings, the thread is clear and smoother to use. 【Firm connection】Hexagonal design at both ends, can tightly clamp the pipe and prevent leakage. 【High quality】This joint set is made from high quality PVC material, the pipe is thick, strong and durable.