As in title they are £3.93 for a pack of 5 of ebay and are perfect for 1 mm brush jets fit straight into gardiners brushes although not to tight so a little bit of superglue sorts this ,
Also a little superglue on other end of which hose goes over jet/tip as yesterday in hot weather the hose kept coming of jet when hose was pulled they work fantastic and help reduce water usage and give a far more powerful rinse .
Somebody did recommend these a while ago but just got round to getting them last week easier than fitting my old 1mm jets from cleantech . MIKE