New Design: Our drain accessories are made of thickened PP material and steel balls, with a visible translucent gray color, and a self-closing one-way check valve, anti-clogging and anti-odor. The transparent design allows you to easily see the inside of the trap, so you don't have to worry about losing your treasure! Unlike traditional drains, which are difficult to remove and clean, our removable design for the kitchen sink P-trap allows for quick and easy maintenance, preventing buildup and clogging.