This tube makes some rotary valve conversions much easier and cleaner.  It helps the valves align.

For the present time we have 2 lengths of 45 tubes, a longer one (4.5" Long) and a shorter one (2.75" Long).  If you have a preference, please let me know when ordering.  Otherwise I will...

Used in our bass trombone wrap  

This tube is used in some rotary conversions. Inner span is  2.15"  Outer span is 3.35"  Tube OD is .600"  Tube ID is .560"

Used in a bass trombone wrap   Outer span is 5.64"  Inner span is 4.40"  Tube OD is .640"  Tube ID is .594  Center to center is 5.10"