The Ramset Green Box .27 Cal 100 Loads Level 3 is a powder-actuated tool used for furring out basement walls and hanging concrete clips. It is compatible with most commonly used Ramset Cobra, SA270, Viper, and XT540 models, as well as Hilti DX2, DX351, DX451, DX460, and other 27 caliber clones. The drive style is designed to drive a nail into concrete, and it comes in a pack of 10 strips of 10 for a total of 100 loads. The tool is made in the United States and is suitable for medium density concrete.