Porter Cable DA250B is a heavy duty pneumatic finish nailer, designed to install 15 ga. finish nails of various lengths from 1-1/4" to 2-1/2" long. The preferred system would include a filter, a pressure regulator, and an automatic oiler located as close to the tool as possible, within 15 ft/4.6 m is ideal. The tool is equipped with a 4" male “quick connector”. A 3s" male “quick connector” is available from Porter-Cable and may be used in situations where a "a" supply line is not available.