16-gauge. Ideal for component assembly, paneling, trim, casing, molding, cabinet, and furniture making. For use in Porter Cable model No. FN200, FN250, FN250A, FN250B, CFN250, Paslode model No. IM250F, 3250-F16, Hitachi model No. NT65A, DuoFast model No. BFN-740, LFN-764, Campbell Hausfeld model No. NB00500, NB006500, Airy model No. ATE350 and AT64.