KitchenAid Mixer Attachment Hobart GMA Grain Mill Coffee Grinder for K45 or K5a
Taken apart for cleaning and inspection, will be shipped assembled. 
Includes the brush for light cleaning.  
Instruction pamphlet included. Instructions which say, "Adjust fineness of grind without grain in mill. To adjust for grinding, turn adjustment knob counter-closewise two turns and start mixer at speed 10" Page 4: Do not grind more than 10 cups of flour at one time. Allow mixer to cool at least 45 minutes before using again"

Instructions page 4: Do NOT grind peanuts or coffee beans in your Grain Mill. 

Box states:
Kitchenaid Grain Mill Stand Mixer Attachment GMA 

Makes flour quickly and easily. 

Adjusts to grind wheat, corn, rice, and other low-moisteure grains to the texture you want.  Designed exclusively for use with all Kitchenaid(R) Household stand mixers. 
Easy to use: Simply insert shaft into attachment hub, adjust fineness of grind with knob, and add grain to hopper. 
Grinds Non-Oily low-moisture grains: grind the flour for delicious homemade treats from wheat, corn, rye, oats, rice, buckwheat, barley, or millet. 

Assembled with pride in Greenville, OH

Factory sticker on box 97088 Kitchenaid GMA Mill Attachment #GMA 406A 22412