Love the concept and they shipped to FPO military address unlike RBG. The only issue I have with this one is that the opening on the bottom for the disc is too narrow and too small. You have to loosen up all the bolts on the electric motor in order to remove the disc to install new sand paper disc. The opening needs to be bigger. If the opening was bigger it would be a 5 star review. I have 17 sets of blades and this machine keeps them sharp for continuous mowing and great cuts.