Semroc Body Tube BT-19 4.0" Long SEM-BT-19-40
Spiral Wound Tube with Glassine Outer Wrap
OD: 0.7"
ID: 0.674"
Thickness: 0.013"
Make for great light weight couplers for BT-20 tubes
Made in the USA
Warranty for 1 year from manufacturer defects