Figure skating jumps are an element of three competitive figure skating disciplines — men's singles, ladies' singles, and pair skating but not ice dancing. Different jumps are identified by the take-off edge and the number of revolutions completed. There are six kinds of jumps currently counted as jump elements in ISU regulations. Three are edge jumps — the Salchow, loop, and Axel — and three are toe jumps which use the toe picks on the front of the blade — the toe loop, flip, and Lutz. The Axel is the most difficult due to an extra half rotation.