It was many years ago but something like these: -
https://www.ebay.co.uk/itm/Quick-rel...gAAOSwrFtaKVsz
Check that it is 8mm ID pipe.
Mine are white plastic and you can get metal ones for a bit more money but I've had no issues with the plastic ones but don't actually need to disconnect them too often anyway.
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Roast Beef Monster!
Termignoni and Bucci - Italian for pipe and slippers!
S4 Fogarty, S4R 07T, 748, Series 1 Mirage