Washer set with three washers (2 for 3/4", 1 for 1"). Including prefilter for 3/4" thread tap connectors. Reliable tap connectors, hose connectors and hoses are essential for an efficient watering system. Kärcher offers a complete range of accessories for connecting, disconnecting and repairing watering systems. For example, the washer set with three washers (2 for 3/4", 1 for 1"). Washer set also includes a prefilter for 3/4" thread tap connectors. Washer set compatible with the three most widely used hose diameters and all commercially available click systems.