Hey Michael
I'm using the generic Chinese made (I presume) "re-badged for everybody" 25 litre pressure pot blaster. I bought my particular one from Trade Tools Direct in Brisbane, but I see Radum/Hare & Forbes, and Glenfords all sell the same thing for about $150. I also have a small shelf mounted box blaster for smaller items.
In the case of the wheels, I couldn't fit them inside the bench top unit, so I used the pressure blaster out in the garden on a "total loss" basis... The glass beads are only about $20 and don't affect the garden
Pressure was around 80psi.