1.Used to grind edge of floor, corner and little eare;2.Instant chang system magnetic metal plates with removable Velcro attachments. 3.Wiht a light and handy bady, a few of grinding coupound. 4.Frequency control and overload light allows full conreol of grinding. 5.Ergonomically designed with many handle position. 6. Detachable chassis for easy transportation.