I have an old school Astro Flight 05, Cobalt motor.
I run two of these in 11 turn fashion in my crawlers, as well as one of Astro Flights puller motors. They are great motors, with high quality parts and machining. The brushes on these are HUGE and almost never wear out. These retailed for $250+ new.
I believe this one to be a 7t? Label is missing, but runs like another 7t I have. This one spins and runs smoothly and quietly. It has a 5mm shaft. Silicone 13awg wires to a deans male connector. Noise caps installed.