GREAT FOR SANDING GLASS. Max. sanding depth 110mm. Adjustable sanding arm pivots 100 degrees for hard to reach areas. Electronic speed control dial for fine work. Easily adjustable belt tracking with a turn of the knob. Dust free work with Makita dust collection system. Optional 6mm and 13mm sanding bars for a wide range of sanding and filing jobs. Double Insulation, Variable Speed and Dust Collecting.