Note:Total 200pcs plastic gears,the shade and the scale of the gear might be sent randomly. Package includes: 1 set of plastic tools The product can be upgraded constantly, the advent and color could also be changed, please do not mind. And take a consideration before position the order when you have request for color or appearance. material: plastic Modulus: 0.5 Model: aircraft gear, worm, crown gear, leading shaft equipment Aperture: 0.8-3mm Purpose: DIY expertise small production handmade toy accessories supplies This mixed tools pack entails 1 pack of about 2 hundred 0.5 modulus plastic gears with random sizes and random apertures. Each pack is assorted and consists of diversified apertures of 0.8-3mm, adding leading shaft gears, face gears, crown gears, and worms. And so on various kinds of gears. There are many types and quantities of models.