This is the Hunter"s Choice Flying Model Rocket Launch Set from Estes. Suitable for Ages 10 & Older with Adult Supervision for Those Under 12. Skill Level E2X Rocket Set. FEATURES: 2 high velocity rockets Magnum Load flies up to 775 feet (236m) Short Round flies up to 575 feet (175m) Launch pad and controller included Plastic fins Parachute recovery Self-stick decals Detailed illustrated assembly and launching instructions INCLUDES: One Magnum Load model rocket One Short Round model rocket Complete launch pad Launch controller Instruction, safety code and warranty information REQUIRES: Minor assembly Igniters (ESTT2301) Recovery wadding (ESTT2274) Engines: Magnum Load - B4-4 (ESTT1602) - first flight or B6-4 (ESTT1606) or C6-5 (ESTT1614) Short Round - 1/2A3-4T (ESTT1504) - first flight or A3-4T (ESTT1507) or A10-3T (ESTT1511) 4 AA batteries (FUGP4304) SPECS: Skill level: E2X Magnum Load Short Round Length: 18.5" (47cm) Length: 11.1" (28.2cm) Diameter: 1.35" (35mm) Diameter: .74" (19mm) Weight: 2oz (56.7g) Weight: .75oz (21.3g) Recovery System: 12" parachute Recovery System: 6" parachute Projected Altitude: 775ft (236m) Projected Altitude: 575ft (175m) COMMENTS: Due to small parts that could cause a choking hazard please keep away from children 3 years of age and younger For your safety and enjoyment, always follow the NAR Model Rocketry Safety Code while participating in any model rocketry activities tlc 1/22/13