This is a great surprise that this set. I was looking for a device capable of treating and improving the condition of nails and feet. Already with an excellent price, so I ignored the somewhat "material" of all and I especially interested in the technical details. The ability to vary the speed and direction of rotation are definitely a plus. The accessory kit supplied is impressive and I do not think I need to look for others before long. Overall an excellent German produced an unrivaled price. Recommended.