Discussion Starter · #1 ·
I've been curious about this for a while now. 7** is a fairly popular size tip opening these days, offered by many makers. But why? Is the .002" difference between that and an 8 actually big enough to warrant a new size offering? If it is, why don't you ever see any other ** tips out there? And why are they always three thousandths bigger than the numerical value and not two thousandths?