Hornady's Lock-N-Load(R) Ammo Concentricity Tool is designed to help reloaders identify and correct bullet runout, improving ammunition uniformity and enhancing potential accuracy. Simple to use, it allows cartridges to be placed in the tool and rolled to detect any wobble, with a dial indicator and precision adjustment thumbscrew enabling quick and accurate corrections. Universal centers provide precise alignment for most bottleneck cartridges ranging from .22 caliber to .45 caliber, while easy-to-use adjustment knobs make truing runout straightforward and repeatable. Built with a durable, sturdy frame that can be securely bolted to a workbench, this essential reloading tool helps produce more consistent ammunition for improved shooting performance and confidence on the range. | Hornady Lock-n-Load Ammo Concentricity Tool