This prefilter can be attached to Karcher's SP3 or SP5 water pumps and adds an extra layer of protection against particle ingress to help improve the reliability and service life of the machine. It is particularly useful when pumping from dirty water sources; to use, simply place under the base of the pump and attach the clips. SpecificationsDimensions: 177mm x 179mm x 53mmMesh Size: 5mmWeight: 0.1kg Features and BenefitsProtects the pump and impeller against blockagesQuick and easy to attach to the pumpNo tools requiredIncreased reliability with no reduction in flow