A long way from the small machine shop the Williams brothers began over 125 years ago, MARSHALLTOWN is now one of the largest tool manufacturers in the world. The company has become more than just a “trowel” supplier and now offers over 5,000 products for professionals and do-it-yourselfers in asphalt, brick, concrete, drywall, EIFS, flooring, paint, plaster, stucco, tile, and wallpaper.