Hermann Schmidt Kuhn Clearview Radius Angle Grinder Dresser Machinist Toolmaker. Here we have 2 Identical perfect shape Precision Dressing units. The #1A has the diamond installed and the # 2B doesn't. They are both in absolutely perfect working order. We had a Veteran Machinist fully inspect them to ensure they are perfect. Please tell us what one you are choosing. You will get FREE Shipping after the 1st one purchased. Buy both and save money. Message with any questions. You can find operating instructions on-line to print out if you need that. call (952)854-5 seven eight six