Being in operation for more than 50 years, Circle K Stores Inc. has been an chain of convenience stores. Based in Phoenix, Ariz., it has more than 3,300 stores across the United States and over 4,000 international locations. The store features Premium Circle K Coffee, ThirstBuster fountain drinks, beer, snacks, candy, ATMs, Talk And Go mobile prepaid wireless phones, gift cards, money orders and general merchandise. Additionally, Circle K Stores Inc. sells various branded fuels, including Shell, BP, 76, Citgo and Chevron.