Bix 030 kit comprising of Bix 014 burner 450 pipe,with no 8 jet and Bix 018 can valve. Fits Wilesco D18, 20, 21, .22, 24, 28 and 32. Also suitable for many other application. Used with gas canister with screw thread on top as shown in other picture . These are available in different shapes and sizes  and makes in most camping and DIY shops. Any questions please ask.