Lightweight solvent tubes.
1.375" OD (large volume 1.375" / B tube)
-Threaded for FC-13 on one end and B size on the other end (for Booster / tri-lug) (Gemtech, Liberty, SDTA)
-1.259" ID for S-13 spacers and SD-13 dividers
-0.5" step on the booster end
All Tubes made from USA sourced 2024-T3 Aluminum.