My projects frequently require an assortment of tapped and clearance holes in a mixture of Imperial and metric sizes. Yes, that is dumb but when you need to mate two items made on different continents there aren't many good choices. To make things go faster I have purchased a number of ER16 TTS holders and pre-setup the various drill lengths in my tool table. Works great with my PDB (I can't afford an ATC)! Unfortunately, I sometimes confuse drills that are a similar size such as the tap drill for M4 (#28) and the tap drill for 8-32 (#29). Has anyone found a good way to label their tools? Or does everyone just religiously put the tools back into the right slot in their holder rack?