Flat perforated disk fits in the wok, water underneath and converts wok into steamer. When steaming fish, smaller items, custard, place food on shallow dish and place dish on rack. For larger items e. g. crab, lobster tails, artichokes, ears of corn, hot dog buns, tortillas, you may place directly on rack. Of course, you need a wok lid to steam. (wok not included)
Medium, 10" diameter for 12" woks
Large, 11" diameter for 14-16" woks
Three attachable legs included.