Have to say I'm horrified when I see those one metre plus breaker bars in use to tighten spinners. The torque they allow such to be tightened to is scary in the wrong hands. Having said that you may need one to undo spinners over tightened by same, fighting fire with fire!
I admit to owning a 600mm breaker bar but use and carry with me one of those pressed steel spinner tools, little over 400mm in length. A few heaves on that tightens and removes to what I regard as sensible torque.
Just checked my Britool breaker bar. 58cm knuckle to very the end, 50cm ‘ish to where I would apply pressure. I am fairly lightweight so I feel this is okay. Watched the garage hammer my rears on then a few days later removed them for cleaning using the breaker. Expected a fight but they came off almost too easily! The front ones I had earlier tightened with the bar came off with a similar level of grunt as those the garage had hammered on. So I think I am happy enough with the breaker
