Universally applicable service plugs made of rubber (NBR), for clean and secure sealing of hoses and pipes, threaded connections, control valves, etc. Very easy to fit and remove. The integrated sealing edges guarantee an optimum fit. ATTENTION: Only use in unpressurized systems!!! The universal service plugs can be cut to size and can be reused after cleaning. Assortment consists of: 10 plugs 5-22mm