I recently fitted an SKF BB to my freshly painted Surly and it came with a shim washer which I’m assuming is to prevent the cup tool from buggering up the paint. I like this idea but do any of you know if you can buy these separately? Annoying I didn’t think to take any measurements before I fitted it and I can’t be bothered to take it out so I’m guesstimating it at 38x35x0.7mm