Assuming the new ones are the same as the older; Measures 55mm across the 'teeth', note the genuine Ohlins one is a pull/push spanner to work in both directions which, combined with having 2 of them makes it easier to adjust (without damaging the nuts) because access is not always that great.
No problem, FWIW I'd recommend getting 2 of the above, you can manage with 1 or even a big hammer/screwdriver combo but it's much easier and neater to do it properly without buggering up the adjuster nut. I got my 2 supplied with an Ohlins shock that I bought from Harris.
Thanks again. I've ordered one from BG Motorsport on eBay. I couldn't find one on the Harris Performance site. Maybe I was looking on the wrong site - perfectly possible