A short demo of the Rat Worx USA Chain MRX at the 2016 Blade Show in Atlanta, GA. The knife shown has a clear handle that really lets you see the inner workings of the knife. This chain drive MRX gives you a knife that will cycle 418,000 times. It’s self-lubricating with ceramic ball-bearings and, “It can take anything from being run over by a Humvee to chopping a 2×4 in half.”