Electomania® 60 Different Types Plastic Double Crown Worm Gears 60 Pcs in 1 Set DIY Robot Toys Modeling Making Crafts Kit(Multi Color)

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It Is Included Gear And Rubber Band,Mix Color.Gears In The Bag.
Perfect for science education, DIY models, RC-airplane/helicopter repair, etc.
This item is for toys gear spare parts package, mainly for 0.5 modulus of each gear for DIY toys with use.
Use it to DIY science and small production, product design, mechanical model, make your life more fun.

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