The stop plug 4.6 mm (3/16") securely seals the Micro Irrigation Hose 4.6 mm. It can also seal openings in 13 mm Supply Pipes if you have previously made holes in the pipe with the Grimsholm Punch Tool and don´t want to use those holes anymore. The ability to reuse all micro irrigation components is one of the Grimsholm Irrigation System advantages, lenghtening the product life cycle. Each pack includes 10 couplings. For a reliable and leak-proof micro irrigation system with consistent water pressure, combine the product with separately available Grimsholm Pressure Regulator 1.5 bar. As part of Grimsholm's dedication to sustainability, we prioritize extending the lifecycle of our products. For this reason, we do not allow patented special connectors in our systems but only work with standard connectors, providing customers with maximum flexibility and the ability to combine products from different manufacturers. This way, an existing system does not need to be replaced entirely whe