Thick walled engine mount tube. Use for all 29 mm diameter motors. Dimensions for ID is 1.140 inches and OD is 1.210 inches. Package includes 3 laser cut BT 80 centering rings, 1 Engine mount tube, and 1 29mm engine retainer.

• Used for 29 mm model rocket engines

• 8 inches (20.32 cm) in length