The Estes BT5 to BT50 Tube Couplers pack gives you a simple way to expand what you can build, repair, and customize. Each pack includes six couplers, with two BT5 couplers, two BT20 couplers, and two BT50 couplers, so you can work across three of the most popular Estes body tube sizes.

Made for Clean Body Tube Connections

Tube couplers are designed to join two matching body tubes together, creating a secure internal connection that helps keep your rocket straight and stable. Whether you are extending a rocket body or replacing a damaged section, these couplers help create a smooth, dependable fit.

Perfect for Repairs, Restorations, and Custom Builds

Every active rocketeer eventually needs a few extra parts on the workbench, and this coupler assortment is one of the most useful sets to keep nearby. Use it to bring a favorite rocket back into flying shape, modify an existing kit, or start experimenting with your own custom model rocket design.

Flexible Parts for Creative Rocket Builders

From compact BT5 rockets to larger BT50 builds, this pack gives you more freedom to shape your next project. Durable, lightweight, and easy to use, Estes BT5 to BT50 Tube Couplers make it easier to turn ideas into rockets that look great and fly strong.