Estes Centering Rings BT5 - BT55

This is the Assortment of BT5-BT55 Centering Rings from Estes.
Suitable for Ages 10 & Older with Adult Supervision for Those Under 12.

FEATURES: Perfect for making your own engine mounts
26 centering rings in 5 different sizes:
8 for BT5 to BT20
4 for BT5 to BT50
8 for BT20 to BT50
2 for BT20 to BT50 - 1 inch long
4 for BT50 to BT55

INCLUDES: Assortment of BT5-BT55 Centering Rings

COMMENTS: Due to small parts that could cause a choking hazard please keep
away from children 3 years of age and younger

For your safety and enjoyment, always follow the NAR Model Rocketry
Safety Code while participating in any model rocketry activities