Abstract: A magazine for use with a fastener driving tool employing a strip of fasteners formed into a coil, and having a fixed portion to be fastened to such a tool, wall means forming a portion of said fixed portion for engaging such a coil of fasteners, a mounting member on the fixed portion along an axis centrally of the coil of fasteners, a movable attachment member incorporated in the mounting member, and movable between locking and releasing positions, a movable magazine portion defining wall means adapted to engage the coil of fasteners, exit means on at least one of the fixed and movable magazine portions, for exit of the fasteners, a slidable guide member formed on the movable portion, interengageable with the mounting member, and locking abutment means located inwardly of the guide member, for interengaging with the locking means on said fixed magazine portion.