optimus 123Boxed Optimus 123, burner heads are mixed,with rounded end air ports, and squared end air ports. All have Optimus twisted wire chain and Optimus model 8 keys. C1Bottom: Plastic Bag with Newer Svea 123ROptimus 123 Climber Repair Kit. Contains: Fuel Valve Assembly, Fuel Tank BrassCotton Fuel-Take-Up Material Assembly,