Circle K at 5690 S 12th Ave, Tucson, AZ, US is a convenience store and gas station offering a wide variety of products for people on the go. If you are looking for a great cup of coffee, a cold beverage, a Polar Pop cup or a Froster drink, or fresh food to go, we are the place to visit. We have premium quality fuels. Our fast and friendly team is always happy to serve you!