Durable and environmental friendly,can serve for a long time. It features deodorant and insect,backwater,stagnant water prevention and gravity merge when placed in the drain slots. It can be opened automatically when launching and closed tightly after finishing,achieving rapid drainage. Prevent drain from blocking. Easy to install,plug and play. Applicable: Widely used for Pipes Tubes in Toilet, Bathroom, Kitchen , Floor and more. Material: Plastic+Stainless Steel Size: app.4.4x4.5cm/1.73x1.77in Color: White Working Principle (1)When the water into the ground drain, the gravity of the water will open the bottom of the ABS gasket, dripping unimpeded. (2) After disruption of water, ASB gasket is automatically closed due to gravity.Completely sealed so that the gas in the pipeline, pests and over flow can not be up. Package includes: 1pc*Floor drain device Note: 1. Floor Deodorant Core only, other accessories demo in the picture is not included! 2. The filter cover can be removed if you not needed.(note:filter cover send random) 3. Due to the light and screen difference, the item's color may be slightly different from the pictures. 4. Please allow 0.5-2 cm differences due to manual measurement.