The Estes 1946 Boosted Bertha Flying Model Rocket Kit Level 3 is an advanced skill-level kit manufactured in 2023. This kit includes everything needed to assemble the Boosted Bertha rocket, which has a 28.2" length and a 1.64" diameter. Designed for ages 8-11 years, this model is perfect for young enthusiasts interested in science and model rocketry. With the Estes brand reputation and the kit's focus on a scientific theme, this kit offers a fun and educational building experience for aspiring rocket scientists.