➺ Product Type: Hard Enamel Pin ➺ Black Nickel Plating ➺ Size: 1.5in Colors may vary due to computer monitors displaying colors differently. What's the difference between A grade and B grade pins? B Grade pins may bear subtle marks - think minor enamel scratches or tiny marks on the surface. Come with discounts. A Grade pins represent the standard quality, exhibiting very subtle to no flaws.