This WorkPro 3 piece 4.5" Metal Cutting Wheel deliver extreme durability, minimal downtime and increased productivity. These diamond rimmed wheels deliver 100X longer cutting life versus a standard bonded cut-off disc in some of the most intense metal cutting situations. The wheel's long lasting durability maximizes cutting even in extreme applications such as rebar, angle iron, cast iron and steel bar. WorkPro's diamond metal cut-off wheels not only provide long lasting cutting life, durability and control, but they also allow for a safer cutting experience. This Workpro cutting wheels have a higher material removal rate, highly durable and Double Reinforced, so more cuts can be done without changing the wheel to improve efficiency.