Manufacturer: RCBS 87627
Attach the base plate to any work surface, then use its pretapped, letter coded holes to quickly mount or unmount RCBS Rotary Case Trimmers, Powder Measure Stand, Lube-A-Matics, Reloader Special, Rock Chucker, and Partner presses, and the Automatic and Standard Priming Tools. Fasteners included.
Fits: .357 SIG, .40 S&W, 10mm Auto
Automatic 4x4 Shell Plate #27 - This shell plate is designed to work with the RCBS Auto 4x4 Progressive Press. It will not work with the Pro 2000, AmmoMaster or piggy back presses.