This pulley kit is an essential tool for any DIY enthusiast. The rubber bands and plastic pulleys are designed to work together seamlessly, providing reliable performance for your projects. Whether you're building a toy car or a mechanical model, this set offers the flexibility and durability needed to achieve your creative goals. Features -Color:Multi -Material:Plastic, rubber -Size:2.50X2.50X0.30cm/0.98X0.98X0.12in -durability: the rubber transmission belt is designed to be wear resistant, ensuring extended use -Quiet operation: the plastic pulley set reduces noise, providing a quiet and smooth operation for your models -User friendly: these model accessories are easy to install and remove, making your diy projects more convenient -Versatile use: this pulley kit is suitable for a range of devices, offering multifunctional applications for different projects -Improved efficiency: the stable transmission effect of this set enhances the efficiency and performance of your mechanical setups Package list: 80 x pulleys 40 x rubber bands 2 x transmission belts