When staining a deck, there is no better tool to use then this 4" stain brush. The stain brush features a threaded handle so you can attach an extension pole to the brush, which is very beneficial for doing larger staining projects, so you don't have to get on your hands and knees. Just twist the handle to remove it. When staining fences or deck rails, you can re-attach the handle back onto the brush to use it by hand. The brush is constructed with a high-quality blend of bristle that helps with even coverage along with providing a very fine finish. The bristles are sealed in an enhanced tin-plated ferrule to prevent bristle loss during use.