Buy Wood Sanding Machines from TileMaster here, as well as the replacement Pad Holder for the Dexter and Multi Disc 5.5 inch 140mm. Free delivery available. The Dexter Wood Sander is designed exclusively for the DEXTER single brush and allows for sanding, grinding and polishing of all stones, concrete and wooden surfaces. It is easy to install, and its protected gears prevent dirt, sludge and dust build-up, helping the machine to maintain optimum functionality and durability. The 4 rotating heads (140mm) allow the user to complete even the most demanding sanding jobs with exceptional results.