MATERIAL ----- The shower floor drain is made of PVC. Floor drain core size is between (width 4.5cm/1.8inch X height 6cm/2.4inch) Suitable for large diameter drains, 4.5cm/1.8inch (please measure before purchase) (4PCS) DURABLE AND CONVENIENT ---- Insert the floor drain core into the sewer and install it in seconds. When the filter element needs to be cleaned, it can be removed from the drain directly by the handle. MAGNETIC SEAL TECHNOLOGY ---- Since the sewer is connected to the underground septic tank, sewage or other air may flow into the room due to odors. Every family needs a high quality floor drain. NEEDED FLOOR DRAIN CORE----Different from ordinary floor drains in the market, our floor drain is designed as an egg structure, it is our original new design, after many trials and tests , you can use it in any confidence. BE APPLICABLE----Essential and practical tool to protect your kitchen, bathroom, garage, basement and toilet from unpleasant odors. Product description Color:Pink Rose 4 Pieces Floor Drain Core, Shower Sewage Backflow Preventer, Floor Drain with Removable Strainer, for Bathroom Features - Color: pink. -Material: PVC - Size: 4.5cm/1.8inch-----6cm/2.4inch - Blocking bad odors and insects from the pipe. - Just plug and use, no need to remove tiles or drill. - 360 degree drain valve, large volume and fast emptying. - Indispensable and practical tool to protect your kitchen, bathroom, garage, basement and toilet from unpleasant odors. Package including 4pcs floor drain core Due to different display settings and lighting effects, the actual color may be slightly different from the image. Due to manual measurement, please allow 1-3cm difference.