Uniweld MTF-17 Cap’n Hook 17 flame tip is the superior way to braze copper tubing. The 40 degree flame angle flows onto copper tubing and away from sensitive areas, thus minimizing the chances of burning adjacent components. Tip provides 100% wraparound of the copper tubing for even heat distribution. Tip elbow is made of tough, durable stainless steel to protect against bending; mixer and nut are brass. Capable of brazing up to 3″ of copper. Has two O-Ring seals so tip nut only needs to be firmly hand tightened. Tip will fit either the 71 or WH550 welding handle.