Quality Material] The clicky basin waste is made of solid brass with a high quality matt black plated finish to effectively resist corrosion and rust. The gasket is made of high quality silicone material, which is resistant to ageing and cracking and provides a stronger seal. Unique Design] The clicky clicky slotless basin down spout has a unique design to prevent overfilling, the pop-up core made of solid brass has good bounce and rebound to enable water to seal quickly and drain at the press of a button. [Pop-Up Slotted Design] Bathroom sink black without overflow design, brass pop-up core has good bounce and rebound, allowing water to seal and drain quickly with one press, easy to operate and clean. Double Sealing GasketBathroom Sink Underspout Black No Slot is made of high quality silicone material, soft texture, extended aging, anti-dry crack, stronger sealing performance, avoid annoying water leakage. Widely usedPrevent overflow, no overflow hole design, match most bathroom, kitchen and countertop vessel sink without overflow. Bathroom Sink Black No Slot Waste is suitable for all commercial sinks, size:66*102*41.3MM,as shown in the picture, there may be a little error in kind. Please note the size of your sink installation before purchasing.