You can get a 36 mm wrench most any place that sells tools. They kind of big if you looking for one to carry around in the tool pouch.

You can also get 36 mm sockets to fit 3/4 inch torque wrench and/or crowfoot wrench for the tool pouch. To carry in the tool pouch,

get the socket and crowfoot wrench. Carry a sawed off breaker bar and couple of pieces of pipe for cheater bars.

You could just cut the combination wrench in half and make cheater bars for it on the road.

You still need the socket for the torque wrench, at least in your shop.