# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
A slight sharp indentation at the base of a nose cone or top or base of a transition, allowing the part to be slid into a tube while allowing alignment of the rocket sections to be maintained.
# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
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