This Byrna Boost Adaptor conveniently allows you to use standard and readily available 12 gram CO2 cartridges, delivering an increase in shot capacity to 30 rounds per cartridge. Easy to install. FeaturesIncreased payload: 50% more shots per CO2 canisterConvenience: 12g CO2 readily available everywhereCompatible with the Byrna SD / EP or HD launcher.Included in the box:12 G Adaptor Left12 G Adaptor Right5/64 hex key1/8 hex key(3) M3 hex screws(2) 1/8 hex screw(3) M3 hex hutsCO2 Tube