Features: *Security seal:4 blue or black pool plugs allow you to securely seal and clean your pool. Great for everyday use and replacement. *Compatibility: Our pool plugs are compatible with non-piston valve above ground pools, please measure the size before purchasing. *Easy to use: The pool plug is mainly used to replace the filter in the water pump. When cleaning the water pump filter, the water will be retained, and the water will not flow and spread. You can enjoy the summer with your family and friends. *Perfect size:Our pool connectors have an outer diameter of 5.9 cm (2.3 inches) and an inner diameter of 2.8 cm (1.1 inches), suitable for 1.14 inch diameter pool hoses without plunger valves. Please check the item size before purchasing. We show the detailed dimensions in the pictures. *Excellent customer service:The pool filter plugs are made of high quality PVC material. However, since it is not an part, the size is measured by hand with a vernier caliper, so there may be a slight difference. If you have any questions, please contact us, we will give you a satisfactory answer. Specification: *Material：PVC *Color：black, blue *Size：2.3*1.55*1.14inch，aperture: 0.9inch Package Contents： 4pcs swimming pool sealing plugs Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data. Security seal:4 blue or black pool plugs allow you to securely seal and clean your pool. Great for everyday use and replacement. Compatibility: Our pool plugs are compatible with non-piston valve above ground pools, please measure the size before purchasing. Easy to use: The pool plug is mainly used to replace the filter in the water pump. When cleaning the water pump filter, the water will be retained, and the water will not flow and spread. You can enjoy the summer with your family and friends. Perfect size:Our pool connectors have an outer diameter of 5.9 cm (2.3 inches) and an inner diameter of 2.8 cm (1.1 inches), suitable for 1.14 inch diameter pool hoses without plunger valves. Please check the item size before purchasing. We show the detailed dimensions in the pictures. Excellent customer service:The pool filter plugs are made of high quality PVC material. However, since it is not an part, the size is measured by hand with a vernier caliper, so there may be a slight difference. If you have any questions, please contact us, we will give you a satisfactory answer.