The Fiskars Stop Connectors feature a simple snap-on/snap-off design that allows for quick and easy replacement of water nozzles, watering rods, sprinklers and other hose ends without having to shut off the water supply. An internal stop mechanism automatically stops water flow during replacement. In addition, SoftGrip touch points allow comfortable handling of the connector, even when wet. Selecting and matching hoses and connectors is easy thanks to the color coding system: blue for 13-15 mm (1/2"-5/8"), red for 19 mm (3/4") and yellow for 9 mm (3/8"). All Fiskars connectors have a universal fit and can be used with other brands of irrigation products.