5 In 1 Car Metal Model Kits STEM Toys Model Car Kits For Boys 8-12 Motorcycle Metal Blocks For Kids Boys 8 9 10 11 12-16 Years Old Features: 【Model Assembly Kits For Boys 8-12】Support STEM Education For Children Aged 8+, The children think carefully and patiently make the toys from the screws and wheels. The Kids can exercise their brain, cultivate their patience 【Assembly Easy】 Car Model Prepared clear instructions for the children, showing the diagrams of each step, 8+ years old Kids will be able to understand and assembling 【Metal Blocks】 car set includes 139 parts, such as, bolts, small screwdriver, and wrench, etc., Made of metal ,Each piece is made of no-rust metal which is more and sturdy than other plastic assemblies.When the build is completed, it can slide for a distance with a little push 【Size】Model measures over 2.9" high, 5.5" long, and 1.7" wide. When you finished the assembly process,it will be bigger than you expect 【Best Vehicle Car Gifts】Designed with accuracy and built with careful attention to detail. It is a valuable collection and souvenir for Model Car enthusiasts Product Details: Material: metal+plastic Product： Car Metal Model Kits Number of accessories: 139 Pcs Color: S.I.L.V.E.R. Suitable age:5+. Function: Assembling DIY ,exercise hand-eye coordination, motor skills, logical thinking and problem-solving skills. Packing size:17x14x4.3 cm/ 6.6x5.6x1.7in. Product gross weight:270g / 0.6 lb Package Contents: 1x Car Metal Model Kits（139 Pcs accessories）