<►> Air return as optional extra. For long (214-217mm) clip together cartridges. Three dedicated versions: - 150ml + 150ml (1:1) - 150ml + 75ml (2:1) - 75ml + 75ml (1:1) .2.2kN .6.8bar .150ml+150ml (1:1), 150ml+75ml (2:1), 75ml+75ml (1:1) .Bead .1900g .63.5mm