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Amazon.com: LEGO Technic Large Gear 40 Tooth Mindstorms NXT Light Grey Part 3649 Piece (Quantity 10 pcs) : Toys & Games
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Lego Technic compatible gears with custom sizes by marian42 | Download free STL model | Printables.com
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Amazon.com: KonHaovF 182PCS Gear and Axle Set for Technic Parts Compatible with Lego Technic Parts, DIY Gears Assortment Pack((Liftarm, Pins, Axles, Connectors)) for Technic Building Blocks Set(Random Color) : Toys & Games
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BrickLink - Part 3648 : LEGO Technic, Gear 24 Tooth with 1 Axle Hole [ Technic, Gear] - BrickLink Reference Catalog
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Amazon.com: LEGO 20pc Technic 8 16 24 40 tooth gear set (Mindstorms nxt robot rcx lot pack) : Toys & Games
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LEGO PART 3648b Technic Gear 24 Tooth [New Style with Single Axle Hole][Type 1] | Rebrickable - Build with LEGO
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