The Starter set for the 57cm Gourmet BBQ System Simply replaces your standard Weber 57cm charcoal cooking grate with a grate which takes the Gourmet BBQ System inserts Grill normally with the 30cm grate insert in, or use the Weber Cast Iron Wok, Sear Grate or Griddle for flexible outdoor cooking Move charcoal easily without removing the grate through the 30cm insert or the hinged sides on the grate. For use with any 57cm Weber Charcoal BBQ only In the set: Weber Gourmet BBQ System 57cm triple-plated cooking grate with 30cm opening 30cm triple-plated grate insert