Very simple transformation of an Estes 24 mm casing into an Estes 29 mm casing size. Reusable.
Adapts Estes 24 mm C11/D, Estes 24 mm E and Estes E30 series Composite engines to a 29 mm Estes casing size. Also adapts other brands of 24 mm composite single use and RMS motor systems. 2 sets per package. Includes orange paper adapter tubes, as shown, and are designed for reuse over and over.