The following are trademarks for one or more DEWALT power tools, accessories, anchors and concrete adhesives: The yellow and black color plan; the “D”-shaped air ingestion grill; the assortment of pyramids about the handgrip; the package box configuration; and the array of lozenge-formed humps about the surface on the tool. https://trentonibtkd.blogthisbiz.com/32554271/indicators-on-dewalt-20-volt-cordless-nailer-you-should-know