Brand new and high quality. Includes 60 different types of parts and accessories in one package, making it a perfect choice for laboratories, science education, DIY models, RC airplane/helicopter repair, etc. This item is a spare parts package for toys, mainly for 0.5 module gears for DIY toys. Our product includes gears, racks, pulleys, belts, and other transmission parts. All displayed images are actual product photos. Specification: Ideal for DIY science projects, small productions, product design, and mechanical models. Material: Plastic Color: White Quantity: 1 set (60 pcs) Note: Please allow 0-1 cm error due to manual measurement. Please ensure you don't mind before bidding. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Includes: Spur Gear: 8 types, largest model 482A Bevel Gear: 9 types, largest model 142A Double Gear: 12 types, largest model 46082A Crown Gear: 9 types, largest model C323A Pulleys: 7 types, largest model 242A Blue Motor Gear: 2 types Belt: 4 types Sleeve: 4 types Worm: 2 types Rack: 1 type Copper Teeth: 1 type Bevel: 1 type