Enough Quantity of Pool Pump Plugs: Compatible with most inflatable swimming pools, ample quantity to meet your different demands and replacements Fit Most Swimming Pools Fine: each spa pump drain plug measures about 6 x 4.2 cm/ 2.36 x 1.65 inches, and the hole is . 2.8 cm/ 1.1 inch; Please confirm whether the size of the product matches your pool filter before purchase Serviceable Material: the pool filter cover is made of quality material, safe, and reliable; What's more, this quality material has softness feature, which is not easy to break Effective Function: this swimming pool drain cover is suitable for pools without plunger valves; You can use the plugs to effectively prevent drainage when cleaning the filter core of the pump or replacing the filter pump, suitable to use Make Your Pool Works: this hose plug set can help you to solve the problem of losing the old plug and can not plug the pool while cleaning and replace the filter; It can be applied to block the drain port with good sealing performance color:Blue Material:PVC Package Contents: 8 x Hole plug stoppers Only the above package content, other products are not included. Note: Light 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.