Whichever one I use, I only have just over 11" of clearance from the floor to the blade nut. Many of the electric impact wrenches exceed the 11" width and unable to fit. The only one with some power I've found so far that may work is a Kwasaki with supposedly 220 ft. lbs. at HD for $71. I do have a torque wrench but really unable to use it while lying on the floor and trying to hold the blades from turning. Someone mentioned at another post to just hit the nut once or twice with impact wrench and that should do it. The last time I changed the blades was with help from neighbor and is air gun, used to remove and install with probably too much torque. I bought a 120 ft. lb. torque stick but would only be able to use with a narrow wrench, like the Ryobi battery. I do like the idea of the Ryobi cordless if that would remove the nuts without much trouble, but for using it just maybe twice each year, not sure if battery is the best option - but its size is perfect, just over 4" wide. A powerful enough electric with not much width would be perfect as I still need the socket which will add some width.