Select a category... Shop Kits and Parts QUASAR ONE CUSTOM ROCKET KITS MODEL ROCKET PARTS. ROCKET DECALS. ESTES ROCKET KITS ESTES ROCKET PARTS ESTES ROCKET MOTORS     Back

ENGINE CENTERING RINGS 18MM TO BT-55 ROCKET TUBE. You get (5) black fiber centering rings in a package.  The rings are for use with the T20-EMT rocket motor tube.  Use them when you want to take a A-B-C type rocket motor and install in into a BT-55 size rocket tube. Compatible with Estes products. CLICK ON IMAGE TO ENLARGE. Item #CR2055-F Price: $2.79  Sale price $1.29

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