We just bought one of those just before doing the nasement and holy shit what a time saver! Took about 1/4 the time as hand trimming. Ours came with the single straight wire cutter and also a quad wire cutter. We put 2 of the quad cutters on, crank that sucker about 20-25 times and your done. Only problem is depending on how much you have to do your arm gonna get tired of cranking. They do sell an electric motor for certain models or can buy one that already has a motor. Needless to say I will be buying a motor.