You can get two green water hose connectors in Sainsbury's for about £1.85, good quality ones as well, bargain I think, I just got 20.
Always handy to have. I use one to plumb in the hose reel to outside van port and another to plumb the pure feed to the tank from RO to the van port.
The o rings eventually wear and the plastic with constantly plumbing in and out daily and every job.
Offered a worn one to our lass for the allotment to join 2 hoses and it kept popping off every time tap turned on. She wasn't impressed and I was soaked trying to hold both hoses on 😂
Need to clear out all my old hose locks and connectors that have one of the nipples missing etc but I keep "just in case"