STEM DIY Building Blocks 3in1 (crane 75PCS) 72boxes/CASE

Minimum order quantity in one case. The postage is 7 USD/KG, Box size：15x18x6

Discover the thrill of engineering with this hands-on STEM crane building kit! Kids construct a realistic pulley crane featuring working winch, gears, and boom lift. Spark creativity, learn mechanics & problem-solving through play. Perfect for curious minds aged 6+!