1、Made of high quality plastic, wearable and long service life 2、The products are for toys pulleys spare parts, suitable for DIY model technology production 3、Small parts, easy to use, great model making accessories for all kinds of cars, robots, etc 4、This is the pulley set including 7 kinds of gear parts. It can meet your DIY needs 5、2A means center shaft is 1.95mm and close-fitting with 2mm shaft. 2B means center shaft is 2.05mm and loose-fitting with 2mm shaft Description: If you are a model amateur, you would know that pulleys are essential and necessary parts for models. Aircraft, automobiles, boats, robots and other small production of science and technology will all need to use pulleys . Here we provide 7pcs pulleys of different sizes which may meet your basic needs for model making. They are also good replacement parts of old or broken pulleys. Features: Made of high quality plastic, wearable and long service life. The products are for toys pulleys spare parts, suitable for DIY model technology production. Small parts, easy to use, great model making accessories for all kinds of cars, robots, etc. This is the pulley set including 7 kinds of gear parts. It can meet your DIY needs. 2A means center shaft is 1.95mm and close-fitting with 2mm shaft. 2B means center shaft is 2.05mm and loose-fitting with 2mm shaft. Specifications: Material: Plastic Color: As pictures show Type: 62A,132A,16.82A,182A,242A,102B,122B 62A: Diameter 6mm, center shaft 1.95mm 132A: Diameter 13mm, center shaft 1.95mm 16.82A: Diameter 16.8mm, center shaft 1.95mm 182A: Diameter 18mm, center shaft 1.95mm 242A: Diameter 24mm, center shaft 1.95mm 102B: 12mm pulley+102B gears, inner bore 2.05mm, loose-fitting(large wheel OD 14.6mm, small wheel OD 5.75mm) 122B: Diameter 16mm, gear of 12 teeth, modulus 0.5, inner bore 2.05mm, loose-fitting. Weight: 5g(approx.) Package Includes: 7pcs x Pulleys Note: Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.