Big Bertha Model Rocket Kit EST1948When going large is the only thing that will do this Big Bertha Model Rocket by Estes for a Skill Level 1 is perfect. When only large and in charge will do the Big Bertha Model Rocket Kit from Estes. Suitable for Ages 10 & Older with Adult Supervision for Those Under 12. Skill Level 1 Rocket Kit. INCLUDES: One model rocket Product Item #: EST1948 FEATURES: Flies up to 550 feet (168m) Slow, realistic take offs Laser cut wood fins 18" parachute One