I took delivery of a shiny brand new shock the other day, but from previous experience and a lack of an oily sheen on the shaft I'd like to check how much oil there is in the air can before riding it. However I can't get the air can off!
Where would you get a rubber strap wrench from locally? Screwfix don't seem to do them, which leaves me immediately out of ideas. Motor factors? Other DIY places?