I've got two greenhouses and this fits neither of them.
There is no give in the pipe down to the water butt so even if it did fit the greenhouse connection it wouldn't actually lineup with the waterbutt below (you may be able to on a really slimline one but on a normal 200 litre one it wouldn't fit) a flexible pipe would work much better but then you're paying 8 quid just for the connector.
Stanley Black & Decker Intellilevel Stud Finder Live Cable Detector S100 077403
17 Aug, 2016
Poor quality
Still leaves you guessing where most studs are is it begins to pick them up at different places along the same stretch and picks some up even where there are non, I've gone back to old fashion tapping the wall to find them as it's just as accurate but miles quicker.
I would spend a little more and get something better quality next time.
BA01D Double Clamp Studio Extendable Reflector Holder Support Arm boom arm
18 Nov, 2017
Cheap and fairly useless
The first time I tried to extend this the lock holding the poles together came off and all the extendable poles fell out, this happens on every section so you have to be really careful not to have it either upside down or extend it too far or they will literally come out in your hands.
It dips under the weight of a 60cm lastolite reflector too so doesn't even do the job I bought it for!