Boost efficiency and cut down on reload time with the Bosch GNB44M Concrete Nail Gun Extended Magazine. With double the capacity of a standard magazine (44 nails vs. 22 nails) and designed for use with the GNB18V-12 Cordless 18V Concrete Nailer, it's the perfect companion for heavy-duty interior steel framing or commercial drywalling. Ideal for attaching metal tracks to concrete, the nails, are tested and ICC-ES-certified for top-notch quality and reliability.