Weiler Tiger aluminum oxide 4.5 inch type 27 grinding wheels deliver the right combination of performance and value when grinding steel and other metals. The flat profile of the wheel in combination with depressed center allows for a wide range of grinding angles (0-45). These 1/4 inch grinding wheels are ideal for heavy stock removal, scale removal, weld removal, weld blending, edge beveling, and torch-cut softening with a right angle grinder. A smaller hub on 4.5 inch wheels keeps the wheel from gouging valuable parts as well as allowing for 30% more usable wheel area. This versatile grinding wheel leverages a strong bond that offers a long life solution for all your general purpose applications at an excellent total cost of use.