Uniweld MTT micro 6000 flexible twin tip has 2 bendable tip ends for maximum control. Tip ends can be bent many times to fit any job. Capable of brazing up to 1" of copper. Tip elbow is copper, mixer and nut are brass. 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.