describe: [material] The pop-up sink is made of SUS304 stainless steel, brass and silicone, sturdy and durable. The material and design match beautifully with any bathroom decor, equipment and accessories. [WIDE APPLICATION] Our universal sink socket is suitable for all standard sinks, mounting size G1 1/4 inch standard , suitable for bathrooms. Fits most wall-mounted sinks, countertop and undermount sinks and European standard size pipes. [Easy Installation] No tools required, just a few steps to complete the bathroom drain installation . Because the copper cover is wide and has a large support surface, it can be assembled by hand without much effort. [Double seal to prevent clogging] Our pop-up sink is made of double sealed thick silicone so no water leaks after installation. Collars, rings or anything that accidentally falls into it grabs effortlessly.