Mould King Aircraft Engine Toys Building Sets Mini Engine Model with Motor 10141 STEM DIY Project Building Kits Collectible Birthday Blocks for Adults Aged 14 2256 Pieces

Functional Aircraft Engine Model This engine model kit that works features bidirectional propeller rotation with pushbutton control and simulated movement effects for builders age 14 Adjustable Motorized System Includes battery box and motor with 3speed gear selection allowing adjustable speed settings making this engine model kits for adults truly interactive STEM Building Experience The 2256 piece engine model kit that runs develops engineering skills through assembly while producing engine sound effects when operational Complete Building Package Contains detailed color manuals in protective packaging assembled model measures 416254235cm 1641093in for display Premium Aviation Model This Mould King engine compatible aircraft set features authentic mechanics and delivers rewarding building experience for aviation enthusiasts