Centering Ring
| Diameter (Inner): | 1.21 inches |
| Diameter (Outer): | 2.94 inches |
| Material: | Plywood (birch) (0.63 g/cm³) |
| Thickness: | 0.08 inches |
Designs:
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| Diameter (Inner): | 1.21 inches |
| Diameter (Outer): | 2.94 inches |
| Material: | Plywood (birch) (0.63 g/cm³) |
| Thickness: | 0.08 inches |
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![Vintage Estes Viper #0820 Model Rocket [4*G-17.25]](https://i.ebayimg.com/thumbs/images/g/Q7EAAOSwN1Nl1kDF/s-l225.jpg "Vintage Estes Viper #0820 Model Rocket [4*G-17.25]")
