They're called 'professional fittings' from cleaning spot:
http://www.cleaningspot.co.uk/acatalog/Microboe_fittings.html
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Yeah I know the one's, there the standard fittings you get on a pole hose, Rectus 21 the fittings I've picked up are a rectus 19 which are bigger and stronger but still fit the pole hose and tap body.
Gordon