Rubber-coated top of 1/3 sheet Model Sr356 deadens vibration when finishing materials such as wood, plastic, or metal. Because there are no protruding parts, sander easily fits into corners or up against vertical sidepieces. Die-cast aluminum base ensures smooth, even finishing while 2-position side handle increases operator control. Quick-action sandpaper clamping system incorporates rubberized pressure pads for strong gripping and tensioning of sanding sheet. Sander has auxiliary fan for self-contained dust collection, or external vacuum hose connection.