Heating burners are available in 0,1,2,3,4,,5 & 6 nos. 2 & 3 No. burners are available with the heating torch. For 0,1,2 & 3 No. burners-Please use M-68 nipple and M-6 LPG industrial rubber hose. For 4,5 & 6 No.burners-Please use M-88 nipple M-8 LPG Industrial rubber hose for better results.