Camel CGW 4 1/2" diameter Quickie Cut Thin Reinforced cut off blades made of a mix of Zirconia and Aluminum Oxide . Grain provides faster cutting and longer life. Available in a Type 27 (depressed center) ZA60S Rigid Style with a thin cut (.045 thickness). Arbor Size: 7/8". Grain Size: Medium Grade: Hard. For right angle grinders. Application: Steel/Stainless steel.