PROBLEM TO BE SOLVED: To provide an easily attachable/detachable rotary blade for bush cutters formed by providing multiple blade parts across the entire circumference of an outer peripheral edge of a disk-shaped pedestal.SOLUTION: The easily attachable/detachable rotary blade for bush cutters includes: an insertion hole 3 at a central part of a disk-shaped pedestal 1 a plurality of locking holes 11a each formed of a circle 12 and arcuate grooves 13 extending from the circle 12, provided on a circumference of the disk-shaped pedestal 1 at positions corresponding to a plurality of locking pins that are erected on an attachable/detachable holder and multiple blade parts 2 formed across the entire circumference of an outer peripheral edge of the disk-shaped pedestal 1. The tips of the blade parts 2 may be formed with double edges 4. A circular cord in which cemented carbide tips are inserted at prescribed intervals may be fitted in the outer peripheral edges of the blade parts 2. Fixing holes 14 for fixing the disk-shaped pedestal 1 are provided on the circumference of the disk-shaped pedestal 1 at positions corresponding to a pair of fixing screws mounted on the attachable/detachable holder.
