The .404 7-pin rim is just a hair smaller in diameter than the 3/8 8-pin, but the difference is very little. She cuts like a champ with it too. I'll see if I can't get a vid up here somehow of a few cuts in a piece of pine. Saw is still a tad rich as evident in the vid, don't want it screaming too much at this point as she's only seen her 3rd tank. If memory serves she's at 14.5k ish RPMs WOT there. Anyway, somewhere between 14.4-14.7k I don't really remember.... :msp_unsure: