Hornady Lock-N-Load Concentricity Tool

This tool identifies and eliminates bullet run out (or wobble). Just place ammunition in the tool, roll it, identify run out and use the dial indicator thumbscrew to adjust.FeaturesUniversal centers ensure precise alignment of most bottleneck cartridges from 22 cal up to 45 cal.Easy-to-use precision adjustment knobs allow you to true up the run out on any cartridge.Sturdy frame can be bolted to your benchProvides improved accuracy for handloaders, and can be used to true up factory ammo too.