1. Tru Tension Chain Monkey
This tool appealed to me as there is always that little bit of doubt when tensioning your chain as to if it is really within spec? That is you flex it up and down and try to measure with a tape measure or some other device but you know it's not EXACT. The premise of the Chain Monkey is you set the slack per the specs included. Tighten the chain with the "Monkey" in place and then when you release it, the slack is EXACTLY per spec. It is easy to use and less messy than other methods in my opinion. I like the device and feel good about achieving factory specs on chain tension with greater accuracy.
