Diffuser Tip turns your torch into a soft-flame soldering gun Slip this tip over your existing oxy-acetylene tip and you can use acetylene (only) to produce a soft flame that\'s perfect for soldering. Saves gas and money 1/4\"-I.D. rubber hose Save gas and money by using this soldering diffuser tip on the end of any tapered oxy/acetylene torch tip.  Use acetylene only—do not use oxygen!  (A flame containing oxygen will melt the rubber in the tip.) Actual I.D. of rubber hose is 1/4\". Instructions included on gas settings to get maximum results. WARNING: READ THE FOLLOWING INSTRUCTIONS BEFORE USING TORCH TIP Installation Push this torch tip onto the end of any tapered oxy/acetylene torch tip. Actual I.D. of rubber hose is 1/4\". Caution - Use Acetylene Only! Do Not Use Oxygen! A flame containing oxygen will melt the rubber in the tip! Flame Adjustment: Unlike ordinary torch tips, turn the acetylene gas on all the way before lighting, then adjust the flame down to the desired setting. If the torch is lit while the gas flow is too low, it will not produce the proper blue cone flame and will blacken the area on which you are working. Incorrect lighting of the torch (low gas flow) with this tip installed will also burn the inside of the tip and melt the rubber