To provide a feeder provided with a device suitable for performing a surface finishing for a rear end part of a bar within a machining cycle of the bar and thereby remarkably reduced in machining cost.

A bar feeder 1 for feeding an automatic lathe 10 is provided with a bar magazine and a guide with bars supplied from the magazine. A surface finishing device 12 is arranged at an end part of the magazine located on an opposite side of an end part adjacent to the lathe 10 and is suitable for machining a rear end part of the bar with which a bar pusher is engaged.