Description: If you are a model amateur, you would know that gears, pulleys and worms are essential and necessary parts for models. Aircraft, automobiles, boats, robots and other small production of science and technology will all need to use those parts. Here we provide many gears of different sizes and many other accessories which may meet your basic needs for model making. They are also good replacement of old or broken parts. Features: Made of high quality plastic, wearable and long service life. These products are for toys gear pulley and other spare parts, suitable for DIY model technology production. There are six different set for your option including many kinds of gear parts and you can find one that better meet your need. Small parts, easy to use, great model making accessories for all kinds of cars, robots, etc. They are also good replacement of old or broken parts. Specifications: Main Material: Plastic 34kinds: Aperture Diameter(mm) Outside Diameter(mm) Pitch Diameter(mm) Thickness(mm) 8Teeth 1.9 5 4 4.8 10Teeth 1.9 6 5 6 10Teeth 1.9 6 5 9.07 10Teeth 2.4 6 5 5 16Teeth 1.9 9 8 5 20Teeth 1.9 11 10 1.5 Double Layer20/10 1.9 11/6 10/5 1.5/3.5 Double Layer20/10 2.0 11/6 10/5 1.5/3.5 24Teeth 1.9 13 12 1.5 30Teeth 1.9 16 15 1.5 30Teeth 2.4 16 15 1.5 Double Layer 30/10 2 16/6 15/5 1.5+3.5 32Teeth 1.9 17 16 1.5 32Teeth 2.9 17 16 2.5 Double Layer 32/10 1.9 17/6 16/5 1.5+3.85 Double Layer 32/10 2.0 17/6 16/5 1.5+3.85 Double Layer 32/20 2 17/11 16/10 1.5+3.93 36 Teeth Eccentric Gear 1.9 18 20 1.5 Double Layer 46/10 2 23/6 23/5 1.4 48 Teeth 1.9 25 24 1.5 48 Teeth 2.4 25 24 1.5 56 Teeth 1.9 29 28 1.5 Single Layer 80 Teeth 1.9 41 40 1.8 Single Layer 120 Teeth 1.9 61 60 1.8 Sector Gear 28 Teeth 1.9 29 28 1.8 Rack 83 Teeth Inner diameter 2.05-2.55mm, length 125mm, width 4mm, thickness 7mm Crown Gear 83 Teeth 1.9 Crown gear outer circle diameter 12.65 2.9+3.85 Worm 1.9 Diameter 5.9, height 9 Worm 1.9 Diameter 5.9, height 6.75 Pulley 1.9 Slot inner diameter 4 Outer diameter 5.4 Slot width 2 Pulley 1.9 Slot inner diameter 5 Outer diameter 9 Slot width 2 Pulley 1.9 Inner diameter 13 Outer diameter 16 Slot width 2 Pulley 1.9 Inner diameter 12.5 Outer diameter 18 Slot width 2 Pulley 1.9 Inner diameter 21 Outer diameter 24 Slot width 2 T Connector Through hole inner diameter 2.0mm, blind hole inner diameter 1.9mm 5 Belts Folded length: 60mm, 60mm, 40mm, 25mm, 20mm 60kinds: Single Layer Gear: 8 kinds, maximum model: 482A Spindle Gear: 10 kinds, maximum model: 182A Double Layer Gear: 12 kinds, maximum model: 46082A Belt Pulley: 7 kinds, maximum model: 242A Crown Gear: 9 kinds, maximum model: C323A Blue Motor Gear: 2 kinds Belt: 4 kinds Shaft Sleeve: 3 kinds Worm: 2 kinds Rack: 1 kind Copper Gear: 1 kind Bevel Gear: 1 kind 64kinds: Spindle Straight Gear: 10 kinds 80.8A 81A 81.5A 82A 92A 102A 122A 132A 142A 182A Crown Gear: 11kinds C152A C203A C282A C282.5A C303A C322A C20082A C28082B C28102.5B C30102B C40102B Single Layer Gear: 12 kinds 202A 242A 242A 302A 303A 302.5A 322A 362A 402A 422A 482A 562A Double Layer Gear: 19 kinds 16102B 18102A 20082B 20102B 22082A 22102B 24102B 24122B 26082B 28102B 30162A 32082B 34102B 38082B 40102B 46082A 48102B 50102A Pulley: 8 kinds 122B 102B 62A 92A 132A 16.82A 242AB Worm: 2 kinds W6*62A W6*82A T Connector Sleeve: 3T-2A-2B Bevel Gear: S162A 75kinds: Spindle Straight Gear: 9 kinds 80.8A 81A 81.5A 82A 102A 122A 132A 142A 182A Crown Gear: 11 kinds C152A C203A C282A C282.5A C303A C322A C20082A C28082B C28102.5B C30102B C40102B Single Layer Gear: 12 kinds 202A 242A 282A 302A 303A 302.5A 322A 362A 402A 422A 482A 562A <