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- 【Safe material no odor】gear Use environmentally friendly materials,thick and no odor.improve children’s hands-on ability and experience the gameplay in real life.creative games.3D variety shapes build as you like it.It is a stem toys for 3 year old 【STEM Engineering Kit】STEM building blocks for kids ages 4-8,lakeshore learning,Activity set includes 15 Colorful gears (blue, green, orange, red, purple)，1 big gear wheel,Special parts including 23 gear ring,80 chain,5 square link block,5 cross link block,80 short screw，3 long screw. 【Manual screwdriver fun manual】This is a rich kids toolbox, which contains screwdrivers and screws.you can turn the screws fit on the gears by hand to exercise hand-eye coordination.stem toys for 3 year old.Stimulate children’s interest in exploring and cultivate thinking habits during the assembly process. 【Gear linkage】This is a cause and effect toys for boys 4-6,the chain drives the gears to rotate so there are many ways to play. Emlightenment puzzle building function:simulate real situations,familiarize yourself with common sense puzzles,combine various puzzles,combine various interesting shapes. 【Simulation game mind and hand】tool games to improve children’s hands-on ability,screwdrives,nuts and other simulation tools,play more fun,more real experience,the number of accessories can be purchased in combination assording to needs,assemble it!
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