Does not include RO_3322 hopper magnet, so it won't work with the RR45A models that require the magnet. Without the adapter (which includes the gate, so one wouldn't be able to close off the hopper without making a big mess without it) this comes with a 62mm (2.44in.) O.D. throat. The adapter has two options: 51mm (2in.) and 46.5mm (1.83in.) O.D. size throats