If the tool you are talking about is the seal driver, when I replaced the seals on my Kawasaki, I carefully measured the diameter and bought a piece of plastic pipe from Home Depot for $3 and cut off a section. Worked perfectly. I haven't had the pleasure of replacing the fork seals on my Venture yet but if they are like the Kawa, I needed an impact wrench to remove the bolt in the bottom that screws into the inner cylinder. Since the cylinder will turn, the quick impact will spin it out. There is a special tool that holds the cylinder. Last time on the Kawa, I used a wooden broom handle to hold it enough to spin the bolt out.