Largest cutter is 2 1/2 diameter for a 5/16 bit.
Middle cutter is 2" diameter for a 5/16 inch bit.
Smallest is 1 1/2 diameter for a 3/16 bit.
The shanks are 3/4 X1 1/2.A really nice beefy set.Comes with 2 wrenches and block for holding.Dont miss this great deal.
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