To provide a magazine facilitating the arrangement of a guide member for preventing trouble of a tool by securing not skewing of a fastener strip in a magazine chamber.

The magazine 50 used for a fastener driving tool is provided with a housing 60 and a slider 70 for defining the chamber, a follower positioned in the chamber for energizing the fastener 90 disposed in a strip state, and a longitudinal guide member disposed in the chamber to guide the fastener. The longitudinal guide member is provided with two fingers 68 extending inwardly from the slider to prevent the fastener assembly in the chamber from skewing.