The rubber transmission belts and plastic pulleys in this set are ideal for creating functional models and toys. Whether you're building a toy car or a small mechanical device, these accessories offer the flexibility and strength needed for smooth operation. The assortment of sizes and types allows for creative projects. Features -Color:Multi -Material:Plastic, rubber -Size:2.50X2.50X0.30cm/0.98X0.98X0.12in -Wear resistant rubber belt: the rubber transmission belt is crafted to resist wear and tear, extending the longevity of your models -Smooth operation: the plastic pulley set minimizes noise, ensuring smooth and efficient operation of your rc cars and other models -Easy installation: these model accessories are designed for easy installation and removal, simplifying your diy projects -Multidevice compatibility: this pulley kit is versatile and can be used with various devices, making it a valuable addition to your toolkit -Enhanced efficiency: the stable transmission provided by this set improves the efficiency and performance of your mechanical projects Package list: 160 x pulleys 40 x rubber bands 2 x transmission belts