Beautiful, sleek, stainless steel Tone Hole Checkers. MusicMedic created these in their Sax ProShop and have been using them for years. Most repairers will use the back of tone hole files to check tone hole flatness, but they can often be covered in dirt, lapping compound, grease, brass shavings, or they could be slightly warped from being dropped.
Checking your tone holes with truly flat, clean, precision leveled corrosion resistant 303 stainless steel discs allows you to level tone holes with absolute certainty. 5 of the 7 largest checkers are tapped in the middle, allowing you to use the screw from the Complete Tone Hole File Set (or any 14/-20 fasteners) as a handle, if you so desire.
For those intending to use these discs to actually file tone holes, a pilot can be used in conjunction with the screw to hold on sandpaper or diamond grit, making this set of tools both versatile and cost effective.
The 7-disc set comes with a holder to keep them organized, clean and damage free. All 3.65mm (0.144") thickness.
The Diameters are:
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