So this morning I decide it was time to put the new brake rotors/hubs on my F150. The $94 3/8 drive 20 volt craftsman battery took off everything without a hitch. It get better. On this truck the brake rotors and hubs are all in one unit. Anyway I used my 1/2 drive 24 inch breaker bar without success. So after removing the 21mm lug not socket I tried using the 1/2 impact on the axle nut that is 36mm. The battery was fully charged. Anyway the nut started to loosen, then stopped. I pulled the trigger and it moved again. To cut through the lard and get to the ham, the 1/2 drive 20 volt Craftsman managed to complete the assignment and removed both axle nuts. For the price these cordless tools they have earned there keep. Ken