While enjoying the router workshop, I was particularly interested in the two wrench system that Bob and Rick used. My Hitachi router came with a thin short 21MM wrench that only fits the collet. I measured the shaft nut to be 23MM. With this information I happily went to my local Sears store and bought the wrenches. Alas, the 23MM wrench is too thick to fit onto the shaft nut. HD and L do not stock single metric wrenches in my area, so I am still looking. Anyone know where Bob & Rick got those wrenches or did they modify existing wrenches?