I used the NBT2 cassette tool for about 6 spoke repairs by the roadside (my chain derailed and gouged out the spokes which started to snap every few days).
It is a bit fiddly to use, works best with vertical dropouts and is tricky with horizontal ones. I tighten to about 7-8 clicks using a small adjustable wrench, it wont remover a workshop-tight cassette.
Why doesnt anyone make a Pamir Hypercracker? What would it take to put it back into production? Who ownes the rights?