If you are a model amateur, you would know that spindle gears are essential and necessary parts for models. Aircraft, automobiles, boats, robots and other small production of science and technology will all need to use spindle gears. Here we provide 26pcs spindle gears of different sizes and sleeves which may meet your basic needs for model making. They are also good replacement parts of old or broken gears. Features: Made of high quality plastic, wearable and long service life. The products are for toys spindle gear 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 spindle gear set including many kinds of gear parts. It can meet your DIY needs. Mainly used in the coreless motors,130.140.180.260.280.370 and all 2mm motors, such as 2.3mm circular shaft motors, 3mm D shaft gear motors, 4mm D shaft gear motors, etc. Specifications: Material: Plastic Modulus: 0.5 Spindle Gears: White: 80.8A, 81A, 81.5A, 82A, 102A, 122A, 132A, 142A, 182A(9pcs) Blue: 153AD, 152.3A, 15.317A, 154AD(4pcs) Worm Gears: 6*62A, 6*82A(2pcs) Bevel Gear: S162A(1pc) Shaft Sleeves: 2mm(10pcs) Weight: 4g(approx.) Gear Diameter=(Teeth number+2) x 0.5 e.g. 81.5A 8 represents 8 teeth, Gear Diameter=(8+2) x 0.5=5mm 1.5A represents close-fitting with 1.5mm shaft. e.g. 153AD 15 represents 15 teeth, Gear Diameter=(15+2) x 0.5=8.5mm 3AD represents close-fitting with 3mm D shaft. Package Includes: 9 pcs x White Spindle Gears 4 pcs x Blue Spindle Gears 2 pcs x Worms 1 pc x Bevel Gear 10 pcs x Shaft Sleeves 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.