INTEGRATED STRAINER: Sink drain valve with valve at the bottom that closes automatically to keep out insects and odors. The sink cover has an internal basket strainer to collect hair and keep the drain from clogging. Jewelry, rings, dirt, etc. cannot go down the drain. General Size: Suitable for drain holes with an internal diameter of 34mm to 40mm. Please pay attention to the installation size of the sink before purchasing to prevent the product from entering the drain hole . Wide range of uses: The drain plug can be used in bathroom sinks, bathtubs and kitchens. EASY INSTALLATION - Easy bare-hand installation without tools. All components can be easily removed. Thanks to its simple and convenient structure, even women can completely install the drain in a few steps without using the commercial instructions for the sink. Packing list: 1 anti-jam paper We only sell anti-blocking products, not other products in the picture Due to differences between monitors, the picture may not reflect the actual color of the item. Small size errors are allowed due to manual measurement.