Grinder Sharpstone W/Handle 60mm 4pce SilverMade from aircraft grade aluminum rod using the newest in CNC machining technology this 4pce grinder features a heavy duty hand crank mechanism which makes grinding a breeze. The top features high density acrylic so you can watch it grind! Anodized for smooth finish; this means no wear or smudge marks and has razor sharp diamond cutting blades for extreme efficiency.