Check the listing for details. Universal cutter grinder sharpener for end mill/Twist drill/lathe cutter US1. Condition: New, Made in China. Listed at 633.07 USD. Adjustable diamond grinder wheel dresser…. Taper angle: 0 degree- 180 degree. Relief angle: 0 degree- 45 degree. Negative angel: 0 degree- 26 degree. Size of Cup grinding wheel :100mmx50mmx20mm. Grinding speed:5200 r.p.m.