This is for one Niagara Cutter, part number DB-4081. The dimensions are 4" X 1/2" X l" ID. I have listed this as like new, but I honestly don't see any signs of it ever being used. Asking $60. If interested please call me. No texts as this is a land line. If you can't call please email me at this ad. Thanks for your interest.
I also have two Niagara Cutters that are 3" X 9/16" X 1 1/4" ID. They are staggered tooth. It says 4" on it but that is not the case. They feel extremely sharp but I do believe they are used. Asking $50 each or both for $90.