62.5 grams (2.21 ounces) of Cocaine Hydrochloride (i.e.. powder, soft, ya-yo, blow) or Cocaine Freebase (i.e...crack, hard, rocks).
This is one of the most common increments of Cocaine weight bought and sold by small to mid level dealers in the Midwestern United States and especially in Chicago. The reason for the amount is that it is exactly 1/16th of a full kilogram, and is easily divided for resale. Cocaine arrives in the United States in pressed rectangles of Cocaine Hydrochloride and weighs nearly exactly 1000 grams. When the Cocaine is broken down for sale, it can quickly be cut in half 4 times to make 16 Two and a splits. The next smallest amount available for sale is an ounce, but a Kilogram can produces an odd amount (35.24) of ounces. The next amount commonly sold is 125 grams or 1/8 of a kilogram (i.e....Big 8, eighth).
Drug Dealer (Retail): "I need to hit the trap and get redone"
Plug (Wholesale): "I ain't got time for no fuckin zip right now"
Drug Dealer (Retail): "Hell naw Joe......I'm fittin to get Two and a split"
Plug (Wholesale): "Aiight come on....."