FASTENERS IDEAL FOR FRAMING: Attach metal tracks to concrete MADE FOR THE BOSCH CONCRETE NAILER: Designed for use with the GNB18V-12 cordless 18V Concrete Nailer TESTED AND CERTIFIED: The nails and the GNB18V-12 Concrete Nailer were tested and certified together (ICC) 22-SHOT COLLATED MAGAZINE: Included with nailer (44-pin extra-capacity magazine sold separately) FIVE DIFFERENT LENGTHS: Available in 5/8, 3/4, 1, 1-1/4 and 1-1/2 In. lengths