Max. sanding depth 110mm.USER BENEFITS: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.