Why does Home Depot label their 2" galvanized nails as
Grip-Rite #11-1/2 x 2 in. 6-Penny Hot-Galvanized Steel Common Nails (1 lb.-Pack)
What is 11-1/2? Or what is 1/2? It's x 2 in so it seems like it's another dimension in inches , but the nail head is about 3/16", nowhere near a half.