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This two-inch long cardboard coupler joins BT-60 diameter body tubes.

This four-inch coupler joins two BT-60 body tubes.

Length: 7.600 inches Diameter: 2.240 inches Shoulder Diameter: 2.170 inches Once assembled, this plastic Apollo capsule fits a little loosely in a...

This is a solid balsa nose block for a standard BT-70 body tube. It is four inches long. Nose blocks are used as solid bulkheads or couplers, often...

This rounded balsa nose cone fits a standard BT-70 diameter body tube. Overall length: 4.35 inch Exposed length: 3.35 inch Shoulder length: 1 inch We...

This is a standard BT-70 diameter kraft white body tube for model rockets. Length:18 in Inside Diameter: 2.175 in Outside Diameter: 2.217 in

A fiber centering ring for centering a BT-20 (18mm motor tube) in a standard BT-70 body tube.

A fiber centering ring for centering a BT-50 (24mm motor tube) in a standard BT-70 body tube.

This is a solid balsa nose block for a standard BT-80 body tube. It is about four inches long. Nose blocks are used as solid bulkheads or couplers,...

This is a standard BT-80 diameter model rocket kraft white body tube. Length:18 inches (457.2 mm) Inside Diameter: 2.560 inches (65.02 mm) Outside...