Replacement Strainer Hose Hole Plug for Intex,Summer Escape swimming pools that do not have plunger valves so you can replace the filters in the pumps. Pump models 530/1000 gph or smaller These are used for the inlet 1" 1/4 Base: 2.25 inches,Plunger Part Diameter: 1 inches,Height/Depth: 1.50 inches 4 PACK UNIVERSAL STRAINER HOLE PLUG Base: 2.25 inches Plunger Part Diameter: 1 inches Height/Depth: 1.50 inches These are used for the inlet 1" 1/4