4 Litre Booster and two types of sustainer.
 

 

 

 

The booster is 2 x 2 liter ‘Robinson Coupled’ which takes interchangeable crushing sleeve stagers. The sustainer in the middle is a 1 litre 10mm nozzle.  The sustainer at the bottom is 500ml with 5mm nozzle.  More information below on these sustainers.