LOWENERGIE Tap Aerator 20mm Male, 4ltr per Minute, Water, Energy Saving Reduce Bills Chrome. Pack Sizes (5)

Fitted perfectly to the tap and good quality

Great product at a competitive price with prompt delivery

Pretty pleased :)In caution, I ordered a single one of these to see if it would fit (priced at £2.69, so it's not exactly a big gamble) into the new bathroom taps Bristan BTZ 1/2 C Blitz Basin Taps - Chrome, delivery was fast indeed. I can confirm they fit nicely.Yes, the diameter of the threaded section is nearer 19.5mm than 20mm, so I can completely understand the 1 star reviews.If I had a pair of calipers, I would be able to give you a better idea. Do measure the aerator it's replacing beforehand.For comparison, this other aerator make was even smaller despite still being called '20mm' 20mm Replacement Tap Spout Aerator Nozzle with Male Thread, so definitely don't go for that one if the aerators here don't fit.The condition it came in wasn't 100% great (a tiny bit worn, but this soon came up to a lovely shine with some chrome polish Autosol 0401A 250ml Liquid Chrome Cleaner), so not a problem.The end result is a good, narrow and foamy flow (very nice for cold drinks because it tastes nicer/lighter IMO). And there are definite benefits to water-savings, which is a massive plus.One of the negatives I will give it is that the nicer aerators have a brass or purely copper mesh (metal rather than plastic like this), which is maybe a small issue since there's no data on whether or not it has any noticeable affect on plasticisers e.t.c. leaching into the water over time. Even if it just means there's a 'funny taste' for a while. (Though I can't say I've noticed one.)Plastic in taps is a bit silly in my opinion, but the original fitting (cheaper models especially) come with plastic aerators, so it's a common tale.With use over time, it won't be an issue, but the plastic components could probably do with a good rinse in hot soapy water before use.I've bought items from lowenergie before and been impressed :) A set of these has been just the ticket and they're set to last.

Although in perfect condition etc this item did not fit my tap and it appears after an extensive search both online and the high street I cannot find anything else suitable. However I did not return because the price didnt warrant the hassle.

Used to replace broken aerator in kitchen tap.

Measure twice the old one you have taken off the tap and this will then fit, will save you a few pennies a year on water usage.

Don’t trust the sizes on this - I feel it’s a strategy of the seller to get you buying more - ordered two now and neither of them are the size they are advertised as - what a waste of time and money

This produces a pathetic little bubble filled squirt. I know it’s supposed to be an aerator, but so was the unit it replaced and that gave a usable water stream. Would not recommend.