This regulator suits 16gm and 74gm co2 bulbs

This regulator features a 6.35mm duotight compatible barb, meaning you can connect just about anything within a matter of seconds.
The most common easy attachment to your ball lock kegs would be adding 1 x   6.35 ball lock disconnect
If however you want to be a bit more protective with your beer not shooting back into the regulator you could minimise the damage by using a 6.35 check valve and some hosing to your ball lock disconnect.

To use the Mini duotight Regulator with threaded (not QD)Soda Stream cylinders you will need the optional  Deluxe Sodastream Cylinder Adapter for Mini duotight Regulator

This Mini duotight Regulator also will work on conventional larger CO2 Cylinders with Type 30 Thread. So if you wanted to connect this regulator to your 2.6 or 6kg c02 cylinder   then you can use tge Thyope 30 Adapter for mini duotright regulators 
Please note, once you get liquid shoot back through it, it's no longer functional. Be extremely careful with overfilling your kegs or tipping them over when the gas has run out.

This regulator is capped at dispensing 30psi to ensure you do not accidentally over carbonate or exceed your kegs pressure rating. The gauge however shows up to 60psi just in case by heat ingress / expansion that it does not break the gauge.