Note: The color is according to the first picture,the quantity and size are according to the title,if the title is not clearly written,according to the . : Isolate drain pipe odors prevent roach infestation into your shower,kitchen,and toilet with 1 simple installation. Avoid expensive drain maintenance costs Keep your home sweet-smelling bug-free NOW Our products Features: 1. One-Way Drain Seal Valves Our floor drain trap seal core is your new choice for drain trouble. It is an easy installation,with no alteration needed for your existing drain. Let you stay away from bad smells. Just perfect for all drain types 2. No More Smell And Wastewater Backflow One-Way Drain Seal Valves helps to blocks the gases from drains or kitchen reverse osmosis and returns home with fresh air. A good choice for the children,and your family. It also blocks bugs and roaches from crawling up through your floor drains 3. Unique V-Shaped One Way Valves Design V-shaped design for floor drain,ensuring the smooth draining and faster water flow. An automatic closing design can strongly prevent backflow. Practical drain backflow preventer 4. High Functionality Material And Design Made of good quality silicone and PP,super flexibility,and abrasion resistance. No smell. Durable,no need to worry about deformation after stretching. 5. Wide Range Of Application Floor drain seal with the closing mouth can be used in the floor drain. So it is necessary to install drain seals in the bathroom,kitchen,toilet,shower room,basement,garage,laundry room. Notice: 1. Actual color may be slightly different from the image due to different monitor and light effect. Please allow 1-3cm deviation due to manual measurement. Specification: Size: 6.5*5.5cm Material: PP+silicone includes: 1/2/5(optional) x One-Way Drain Seal Valves