The Makita Tool Hanger Set (1911K0-5) is for use with the 40V max XGT® Brushless 13/16" SDS-PLUS AVT® Rotary Hammer, (GRH10, sold separately). The Tool Hanger Set allows the tool to remain close by when working. The 1911K0-5 swivels out of the way quickly and easily. It allows for a lanyard to be connected for more hanging options. The Tool Hanger Set is also for use with select Makita rotary hammers.