Cut-off and grinding abrasives are used in metalworking and machining applications to cut workpieces to size and smooth metal, stone, and concrete surfaces. Cut-off wheels cut and notch metal using the edge of the wheel. Grinding wheels smooth weld lines, remove slag, and finish concrete surfaces. Combination cut-off and grinding wheels install on angle grinders to cut, notch, and grind workpieces without requiring a tool change. Grinding cones and plugs debur and smooth weld lines on metal. Rubbing bricks are used by stone masons and concrete workers to remove mold and debris from stone and concrete. Surface grinding segments install in rotary grinders to smooth flat workpieces. Dressing and truing tools keep grinding wheels round, concentric, and sharp.