The Sizemaster Shotshell Reloader offers simplicity without sacrificing convenience and efficiency. The "Power Ring" collet resizer returns bases to factory specification, regardless of whether they're brass or steel heads, high or low base. Adjustable to 3" shells. Additional die sets (to change gauges) are available. E-Z Prime primer feeder included on 10, 12, 16, 20, 28 gauge models.