SECURE SEAL: Equipped With A High-Quality Gasket, Our Cap Provides A Tight And Secure Seal, Stopping Any Leakage Or Spillage. The Edges Of Our Drain Cap Are Designed To Provide Excellent Grip, So It 't Easily Slip Off During Use. QUALITY MATERIALS: Pool Sand Filter Base Filters Drain Cap Fits Pump Systems, Made Of High-Quality Plastic Material, With A Smooth That Is Not Easily Broken Or Deformed, It Also Ensures The Product's Performance, Durability And Safety. EASY INSTALLATION: Hand Tightens Only. The Cap's Ridged Edges Will A Firm Grip. Tighten Until The Drain No Longer Leaks. Use Some Tape On The Drain Port's Threads If Leaks Persist. DRAIN CAP COMPATIBLE WITH: for Swimming Pool Sand Filter: : S140T, S144T, S164T, S166T, S180T, S210T, S220T, S220T2, S230T, S244T, S244T2, S270T, S270T2, S310T2, S360T2 - Plus: S311Sx, S311Sxv, S360Sx - High Rate: S170Tscpe, S190Tscpe, S190Tscpft, S190Tscpt. Colour:Black Material:Plastic Package Contents: 5 * swimming pool sand filter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.