I really don't want to make this an advertising post, because I do clean everyday, and love this industry, i will cont. to clean as long as i'm able.
I only sound enthusiastic because this simple addition to my wand has changed the way I clean and view pushing wand everyday, it's really that big of a deal.
on the freebie, I extend the same to you here in the UK as I do the Americans and Aussies, with Credit Card guarantee, I'll send you one to evaluate, you only pay (ie: I process the card) if you like the GreenGlide, and i pay shipping.
I welcome you to read the website GreenGlides.com and specifically the "Learn about glides" section before ordering, so you roughly understand the concept.
As for fitting wands, thankfully there are enough mainstream wands made by well known mfgs. that I can easily tell what you have, such as a Prochem 11" quad jet, or PMF 12" 2 jet S bend.
What is critical is the wand lips dimensions, not the individual lips, but the whole "footprint" of what touches the carpet, usually it's a 12" wand, and has a width of about 1/2" give or take and those lips usually ahve a "lip ridge" about the same 1/2" or so off the carpet, this ridge is what the glide holds on to as the wand sits down into the machined channel of the teflon rod.