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Product size: 24*12*10cm/9
Watch the arrow spin and rotate in continuous motion when the bow is pulled back
let machinery into the their cognitive world early
Technology: 219 parts are all exquisitely polished by special abrasive tools
NikolaToy™ Aircraft model Stirling engine model Material:Quartz (Hot sales) Product size: 24*12*10cm/9Description We have a production patent for this product, and selling it through any other channel is not our genuine product This Aircraft model Stirling engine model is the perfect choice for children looking to learn about thermodynamics. Its dynamic design and impressive features are great for learning and entertaining. It also makes a great display piece.