Weiler Tiger aluminum oxide 4.5 inch type 27 depressed center cutting wheels deliver the right combination of performance and value when cutting steel and other metals. The depressed center provides added clearance when working at a constrained angle and .045 wheel thickness is ideal for cutting tubes, bar stock and large cross-sections with a right angle grinder. The open arbor offers a cost-effective mounting option when using adapting nuts. This versatile cutting wheel leverages a strong bond that offers a long life solution for all your general purpose applications at an excellent total cost of use.