I am currently buying some of the tools for the maintenance and repair of our family bikes. I have just bought a BB tool and was deciding whether to buy a 32mm socket and an 18" breaker bar for the BB extraction (my current 3/8" socket set only goes up to 19mm). Does this make sense or is there something better I could buy to remove difficult to move bottom brackets? Also, one of my bikes BB has a locking ring on the non drive side that needs a C spanner (if that's the right term). Do these spanners come in different sizes and if so how do I determine which size I need? Any advice appreciated.