"Wonderful, easy to use, easy to take apart if needed and usually no leaks at first time of asking. I've used J G speedfit stuff for years and would highly recommend it especially if hidden from view. It's the only plastic plumbing kit I use as in my opinion superior to its competitors. Only slight complaint is that it's quite expensive but you do get what you play for."
"The best thing about these is that they are easy to dismantle which has two advantages; -they are easy to get into tight gaps when you are teeing into existing copper. -getting them apart in the future for servicing or draining down is a doddle."