Weiler Tiger aluminum oxide 4.5 inch type 27 combo wheels deliver the right combination of performance and value when cutting and grinding steel and other metals. Combination wheels offer flexibility and efficiency when switching between cutting and grinding with a right angle grinder. A smaller hub on 4.5 inch wheels keeps the hub from gouging valuable parts as well as allowing for 30% more usable wheel area. This versatile combo wheel leverages a strong bond that offers a long life solution for all your general purpose applications at an excellent total cost of use.