▊ 11500 times a minute highspeed microvibration, clear engraving, fine degree is no less than manual engraving. ▊ 8 kinds of cutting head can be switched freely to deal with various complicated carving projects. ▊ Small body, easy to hold, easy to operate, more comfortable to use. ▊ The cutter head is made of SK5 professional steel, which is more durable for fine grinding. ▊ Free carbon brush, copper motor, carbonfree brush, longer life and more durable.