Each wheel is a flat metal ring approximately 38 cm (about 15 inches) diameter. One quarter-segment has a padded grip with a cross-guard; the other three segments have protruding flame-styled blades. With one wheel in each hand, the practitioner can slash, stab, parry, or disarm an opponent.
In the mythological story Fengshen Yanyi, the Immortal Taiyi gave Nezha a wind-wheel and a fire-wheel. These were tread on whilst chanting incantations, to serve as a magic vehicle.