New old stock milling cutter for shoe finishing/ polishing machine. The inner diameter is 19 mm. I am not sure for which machine it is made, but you can determine without a doubt knowing the shaft diameter of your machine.
Several manufacturers are possible including Mebus, Frobana, Hardo, Hess, AFT and more.
Inner (shaft) diameter: 19 mm
Width cutter: 23 mm
Width working surface between the slopes: 18 mm
If you have any questions or special needs, please ask.