This is one BT5-BT55 Centering Rings, for Model Rockets, (26pcs) by Estes Rockets. Please note in store availability and pricing may vary. Includes 26 Centering Rings in 5 different sizes. BT5, BT20, BT50 and BT55. Perfect for making your own engine mounts!
26 Centering Rings
8 each. BT5 to BT20.
4 each. BT5 to BT50.
8 each. BT20 to BT50.
2 each. BT20 to BT50 – 1 inch long.
4 each. BT50 to BT55.
