Sharpener for domed and round caps

This tool allows sharpening round and domed caps.
In order to get the best sharpening results, it is recommended to use an electric screwing tool or pneumatic drill, with a rotation speed between 400 and 500 rpm. The metal rod to be inserted in the mandrel of the tool is milled with 3 flat surfaces, to be aligned with the jaws of the mandrel for optimum holding.