A ratio 1x2 call spread, or front spread, is comprised of 2 legs, both calls at two different strike prices in the same expiration month. Ratio spreads involve buying one option and selling two options with a higher strike price. The most common ratio is 1x2, but any ratio can be used. Ratio spreads can be executed for debits, credits, or even money. Ratio spreads can be very complex, which increases the amount of risk involved.