Brengun is an aftermarket company that supplies parts and accessories for a vast variety of models, as well as their own model kits.
This photo etch set included just about everything needed to enhance and upgrade the old “classic” Airfix/Heller 1/72 Gazelle helicopter.
Much of the set accommodates various antennae’s, windscreen wipers, Rotor head cyclic and collective push rods and swash plate, cyclic’s for each pilot, rubber pedals and instrument panel and center console. The only thing I would have liked were a set of seat belts. However, in this scale, making belts from tape would be quite acceptable, or sourcing photo etch belts elsewhere should be fairly easy.
A small but easily readable instruction sheet was included and showed a few parts that were options.