Model rocket body tubes are limited in length. The ones for sale on this web site measure 18" long. To build rockets that are twice as long, simply connect two tubes with a coupler. Great for modelers who like to scratch-build.

		Pack of 5 BT-50 Body Tube Couplers Used to connect two, or more, BT50 model rocket tubes. Each body tube coupler is 1.5" long. Can also be used to build multi-stage models.
		$2.99

		Pack of 5 BT-55 Tube Connectors For use with Estes-type BT55 airframe tubes. Couplers are each 2" long. Five units per pack. Manufactured by Sunward Aerospace.
		$2.99

		Pack of 4 BT-60 Tube Couplers Fits BT60 model rocket tubes. Pack of four, individual connectors measure 2" in length. Pick up a set and build some super-tall rockets for your next launch.
		$2.99

		Pack of 2 BT-80 Tube Couplers (3" long) Set of two large body tube couplers for use with BT80 airframe tubes. Each of the units is 3" long. Quality building parts made by Starlight Rocketry.
		$2.99

These can also be used to repair damaged airframes. Cut off the damaged part of the airframe. Glue a coupler into the undamaged part of the airframe, where the cut was made. Once the glue dries, glue a new body tube (cut to desired length) onto the coupler and let dry. Your rocket will be ready to launch again in no time.