Ducati closing shim measurement tools for Ø7mm and Ø8mm valves.
These tools are made by Dragonstone and will enable you to identify the shims you take out so you can order the shims you need with reasonable accuracy. Designed to be used with a digital vernier calliper. Simply zero your calliper on the length of the tool, then use the tool to obtain the shim size.
See the Resource / Download section for an instructional video.