Found 2 3D-models for “29mm retainer” across many websites

#thrust ring#motor retainer#29mm#29mm retainer#rocket#Aerotech#Estes retainer#Estes
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29mm Thrust Ring for Aerotech Composite Motor

29mm Thrust Ring for Aerotech Composite Motor

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29mm Estes Rocket Motor Retainer

29mm Estes Rocket Motor Retainer

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