Product Including: You will receive 2 pieces of sand filter drain covers and 2 gaskets to get your drainage problems solved. Compatibly: Our sand filter drain cap and gasket are compatible with Hayward pro series S140T, S144T, S164T, S166T, S180T, S210T, S220T, S220T2, S230T, S270T, S270T2, S310T2, S360T2; Hayward pro series plus S311SX, S311SXV, S360SX; high rate S170TSCPE, S190TSCPE, S190TSCPFT, S190TSCPT sand filters. Please note that our product is not sponsored or endorsed by, or affiliated with the brands it fits, including Hayward. Proper Size: Gasket measures is approximately 3x3cm/1.18x1.18in, Sand Filter Drain Cover measures is approximately 4x2.2cm/1.58x0.87in. Proper size fits most drainers.（Please check the size before purchasing） Product Material: The sand filter drain cover is made of plastic, and the gasket is made of rubber, providing a tight and safe seal that is not easily damaged or deformed, reliable, can be used for a long time. Easy to use: Just tighten by hand.