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This three-inch long coupler fits in BT-20 diameter body tubes.

This is a solid balsa nose block for a standard BT-50 body tube. It is 2 inches long. Nose blocks are used as solid bulkheads or couplers, often to...

This is a standard BT-50 diameter kraft white model rocket body tube for constructing your own designs. Length:18 inches Inside Diameter: 0.950...

This one-inch coupler joins two BT-50 body tubes.

This is a cardboard tube used as a motor mount for 24mm diameter model rocket motors. It is 3.75" long, the same length as an Estes E9 or E12 engine.

This is a 12-inch long heavy-duty BT-50H kraft white model rocket body tube for constructing your own designs. This tube's outside diameter is...

This is a solid balsa nose block for a standard BT-55 body tube. It is two inches long. Nose blocks are used as solid bulkheads or couplers, often to...

This is a standard BT-55 diameter model rocket white kraft body tube. Length:18 in Inside Diameter: 1.283 in Outside Diameter: 1.325 in

A fiber centering ring for centering a BT-20 (18mm motor tube) inside a standard BT-55 tube.

A fiber centering ring for centering a BT-50 (24mm motor tube) in a standard BT-55 body tube.