An Angle Grinder, conjointly referred to as an aspect grinder or disc grinder, could be a hand-held machine used for grinding (abrasive cutting) and sharpening. Angle grinders will be battery-powered by an electrical motor or compressed gas. Electric motors or compressed air can power angle grinders. The motor drives a geared head at right angles, mounted on an abrasive disc or a thin cut-disc f disc, any of which can be replaced when worn.