![9720 Estes Doorknob Pro Series II](http://everdonhobbies.com/cdn/shop/products/EstesProSeriesIIDoorknobParachut_1024x1024_2x_71f790a6-23c8-48ad-8660-5776d8a13a20_{width}x.webp?v=1677937651)
9720 Estes Doorknob Pro Series II
Tall : 26.9"
Body : 3"
Engine : E16-4, F5-4, F15-6,
Projected max Altitude : 1,100 ft
Recovery : 18" Parachute
Level : 2
Condition : New in Box
Estes model rocketry is recommended for boys and girls ages 10+ with adult supervision for those under 12, and rocketeers of all ages.