Drainage structure: impeller water flow water inlet quickly. The mesh prevents foreign matter in the hair from entering the drain. U-shaped sealing tube double protection, insect proof, anti - odors and without foreign matter.TPR soft rubber stopper to prevent odor overflow, leak-proof and leak-proof. Easy to use and install: just open the floor drain cover and put it into the floor drain core. Easy to install and remove. Wide Use: Opening diameter 37mm-75mm, which is applicable to all, it is recommended to measure the hole size and the depth of the floor drain before purchase. U-shaped water seal structure: easy to get into water, not easy to get out of water, 360 degree drainage, water quickly, no water on the ground. With 4 rods: the 4 plugs, together with the strainer above, offer double protection to prevent hair from reaching the siphon Features: U-shaped water seal structure: easy to get into water, not easy to get out of water, 360 degree drainage, water quickly, no water on the ground. Wide Use: Opening diameter 37mm-75mm, which is applicable to all, it is recommended to measure the hole size and the depth of the floor drain before purchase. Drainage structure: impeller water flow water inlet quickly. The mesh prevents foreign bodies in the hair from entering the drain. Double protection U-shaped sealing tube, insect-proof, odor-proof and free of foreign matter.TPR soft rubber stopper to prevent odor overflow, leak-proof and leak-proof. Easy to use and install: just open the drain cover and put it into the floor drain core. Easy to install and remove. With 4 rods: the 4 stoppers, as well as the colander above, offer double protection to prevent hair from reaching the siphon. Content: 4 floor drain cores.