Set of 5 Durable Plastic GearsFeatures: Polyethylene resin Gears are 0.147" bore size Bushings are 0.07" bore diameter Tooth depth: 0.09" Center hole fits 4mm shaft; bushing reduces it to 2mm T10, T20, T30, T40, T50 and bushings (5 sets) Approximate weight: 0.1 pounds (lbs.). Gear Dimensions T10 - Diameter: 0.465", Gear thickness: 0.229" T20 - Diameter: 0.838", Gear thickness: 0.225" (at center hub: 0.227") T30 - Diameter: 1.219", Gear thickness: 0.220" (at center hub: 0.219") T40 - Diameter: 1.642", Gear thickness: 0.220" (at center hub: 0.229") T50 - Diameter: 2.020", Gear thickness: 0.229" (at center hub: 0.226")
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