Do you want to maximize cutting and reduce burr?  Choose Camel CGW 4 1/2" diameter Quickie Cut Flex Reinforced extra thin cut off blades A60T made of Aluminum Oxide.  Provides fast cutting, longer blade life, and less vibration. Style: Type 1 (flat center), flexible and extra thin (.035 thickness), 7/8" arbor, no hub.  Grain Size:   Medium Grade: Hard.   For right angle grinders.  Application: metal and stainless steel.