Estes 3158 Regular Engine Mount Kit, 3 Mounts – 19mm Mounts for BT-50, BT-55, BT-56 & BT-60 Model Rocket Tubes

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Regular engine mounts for BT-50, 55, 56 & 60 body tubes Includes enough pieces for 3 mounts. Easy to assemble with complete instructions. Engine mount tubes are a BT20 or 0.74 in. (19 mm) Plus can be used to make a conversion mount for lightweight D powered rockets Show more