ERGONOMIC, INSULATED AND LIGHTWEIGHT.USER BENEFITS:Ergonomic, insulated and lightweight housing made from impact-proof plastic.Compact dimensions for convenient one-hand operation.For grinding flat and curved surfaces in a variety of different materials.Infinitely variable speed control for working with different materials.Sound-proofed air outlet for reduced noise operation.Suitable for wet and dry sanding/grinding.Separate exhaust: connection option ? 25 mm to external dust extraction.6-hole backing pad ? 150 mm with hook and loop for use of currently available sandpapers.