5 station Shell Plates for RCBS Pro2000 or Piggyback ammo presses. Please see reference chart for calibers used on each plate. Most plates have a caliber etched into the back of the plate. Note - the reference chart skus are for the single RCBS shell holders, the single shell holder numbers and the 5 station plate numbers do correspond, this was verified with RCBS. Also, shell plate 28 for 444 Marlin does not have a sku, as it is discontinued and no longer in production with RCBS. Please ask any questions!