Features:

Open Structure / Low   Concentration
   

  
1. Bonded Abrasives - Open        Structure
  
2. Coated Abrasives - Open Coat
  
3. Superabrasives - Low Concentration

Closed Structure / High   Concentration
   

  
1. Bonded Abrasives - Dense        Structure
  
2. Coated Abrasives - Closed Coat
  
3. Superabrasives - High Concentration

Angle / Double Bevel (E Face)
   

Abrasive   wheel face having a pointed, "Vee" or double beveled shape for   threading or similar applications.
   

Radius Face (F Face)
   

Radius   face wheels have a face that is rounded such as type 1F1 shapes.
   

Tapered /   Fluting (V, B Face)
   

Tapered   face wheels have a face that is angled back such as type 1V1P shapes.   Tapered face wheels are used for fluting applications.
   

Specialty / Other
   

Other   specialty, proprietary or patented features.