... Mirror grinding super high wear resistant, super sharp, stainless pelletizer hob cutter machining Super-hard processing of professional, special, ... cutting. After being coated, it has better result, can machine various materials of HRC60°. Comparing with ISOP15-P30/K15- ... fixture. After being coated, it has better result, can machine various materials of HRC50°. Comparing with ISOK20&general tungsten ...