Ingco angle grinder, 4", AG8006-2 is a power tool that can be used for different projects. You can cut metal, aluminium, concrete, bricks, pavers, wood, and other dense materials; you can sand and polish different surfaces to sharpen tools and grind materials. Angle grinders can be used with different types of discs for different jobs. Angle grinders can be powered by an electric motor or compressed air. The motor drives a geared head at a right angle on which is mounted an abrasive disc or a thinner cut-off disc, either of which can be replaced when worn.