For top quality products for all your painting and decorating needs, look to the Dynamic brand. From specialty paint brushes, rollers and faux finish applicators to wallpaper tools and accessories, Dynamic products come in do-it-yourself or professional contractor grades for the best in quality, innovation and value. Dynamic's 13-Inch Contractor Caulking Gun is Quart Size, with a barrel frame. It features a built-in spout cutter on the handle and a smooth rod with a spring-loaded thumb release.