These are the best feeler gauges I have ever used. They are the only set I’ve seen that is capable of measuring all 2, 3 and 4v Ducatis. They are shaped optimally, with narrow heads and a fatter base for strength. They are also longer than any of other feeler gauges, making them perfect for getting into tight spaces, such as on Testastretta engines.
The 30 piece set includes gauge sizes as follows: .001″ (.03mm), .0015″ (.04mm), .0025″ (.06mm), .0028″ (.07mm), .0035″ (.09mm), .004″ (.1mm), .005″ (.13mm), .006″ (.152mm), .007″ (.178mm), .008″ (.203mm), .009″ (.229mm), .010″ (.254mm), .011(.274mm), .012″ (.305mm), .013″ (.330mm), .014″ (.356mm), .015″ (.38mm) + 6 more sizes up to .030″ (.75mm).
These are the feelers I use on all Ducatis that I service.