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"    

Tuning slide crook for our tenor trombone wrap 5.18" OD span    4" ID span

Nickel Outer Slide Tube Fits Well With the Brass Inner Tubes.  6.625" Long

Brass Inner Tubes have a nice fit in our nickel outer tubes.  6.5" long 

Nickel ferrule for connecting our tenor wrap tubes together