Parts for Rockets - Body Tubes - ST-20 - eRockets
33mm X 18 Slotted Body Tube (Estes BT-55 Size)
Slotted Body Tube 41.6mm X 18 (Estes BT-60 Size)
18mm x 18 Body Tube (BT-20)
BT-20 Body Tube. 18 White. Bulk Pack (12) [924020]. Rocketarium : Rocketarium Model Rocket Kits, parts and launch supplies
Centering Ring 18mm to 24mm (50 pack)
Make Your Own Kraft Paper Tubes : 8 Steps (with Pictures) - Instructables
24mm - 56mm (BT-70) Centering Ring by Rocketry Works
Scratch building bits :: Body tubes / Air frames
66mm (BT-80) Bulkhead by Rocketry Works
StellaLyra 18mm 1.25 68º LER / WA Eyepiece