The Estes Black Brant II is a 1:13 scale replica of one of the earliest of the Black Brant sounding rockets. Loaded with scale details, this rocket really moves using the recommended Estes D-12 engines (not included) Length: 24.9 in. (63.2 cm) Diameter: 1.33 in. (34 mm) Estimated Weight: 3 oz. (85 g) Fins: Laser cut wood Recovery: 18 in. (45.7 cm) Parachute Projected Altitude: 1300 ft. (396 m) Recommended Engines: D12-5 for first launch; D12-7