"I used this to hook up my toilet cistern after a similar part started leaking at the isolator valve. Don't know if the old part came from Screwfix but the new part doesn't leak and was cheap as chips."
"I bought 2 flexi connectors from my plumb merchant which are o.k but were twice the price of these. These were not only much cheaper but better quality, and the isolater valve works perfectly. Nice one."
"Used it to connect 15mm mains cold to plastic thread on a Fluidmaster Bottom Entry Fill Valve in a toilet cistern.
Could not be easier. Turned off mains. Removed old isolating valve and leaking connecting pipe. Fitted isolating end of flex utilising existing 15mm nut and olive. With isolator turned off turned mains on - no leaks. Fitted 1/2" end to Fill Valve. Turned isolator on - no leaks. Job done.
Have given 5 stars for reliability as no problems after a month in position.
At this price with built in isolating valve there is no competition. Forget DIY stores, head to Screwfix."