- Parts from Semroc
- Semroc Centering Rings
- BT-70 & BTH-70
- Semroc Centering Ring #9 to BT-70 (Pkg of 2) SEM-CR-9-70P *
Semroc Centering Ring #9 to BT-70 (Pkg of 2)
Lightweight plywood rings which center a #9 series tube inside a #225 series tube. Especially useful for making a 24mm engine mount for BT-70 rocket bodies. Requires two per engine mount.