Micron Precision Series - Neck Sizing Bushing, .320"

I’ve used many bushings and some just flat out are not true. Even with annealed brass, the bushing sizes .001-.002” differently than the advertised size on a number of brass brands (yes, I “quality check” all bushings). These micron precision bushings are always true. I have maybe a half a dozen or a little more and they are 100% true. Many other brands I’ve tested have a 50-70% rate of being true. These are worth the money especially since neck tension has a significant affect on your tune window.