RCBS Accessory Base (Plate-2) Save time, space and eliminate a loading bench top full of holes Attach to any work surface Pre-tapped, letter-coded holes quickly mount or dismount RCBS Case Trimmers, Trim Pro, Powder Measure Stand, Lube-A-Matic2, Reloader Special, Rock Chucker, Pro 2000 Measures approximately 10 x 6 x 1.Turret Press, AmmoMaster, Partner Press and the APS Bench Mounted, Automatic and Standard Priming Tools