![Amazon.com: LEGO Technic NEW 12 pcs BLACK WORM AND RACK GEAR SET Screw Track Kit Part Piece Mindstorms NXT robot robotics assortment pack ev3 motor : Toys & Games Amazon.com: LEGO Technic NEW 12 pcs BLACK WORM AND RACK GEAR SET Screw Track Kit Part Piece Mindstorms NXT robot robotics assortment pack ev3 motor : Toys & Games](https://m.media-amazon.com/images/I/51vtGxUrtxL.jpg)
Amazon.com: LEGO Technic NEW 12 pcs BLACK WORM AND RACK GEAR SET Screw Track Kit Part Piece Mindstorms NXT robot robotics assortment pack ev3 motor : Toys & Games
![LEGO® parts 73763, 73764 & 3863: A worm gear family | New Elementary: LEGO® parts, sets and techniques LEGO® parts 73763, 73764 & 3863: A worm gear family | New Elementary: LEGO® parts, sets and techniques](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjWLdz4HNBvy26ibflra_7N0-S9bpJ4Zj9T5HFu8HXx211iydTjKY0e9CbiJtCQuCD81paj_qruV-AhTIzqZvovBj1G7GyhtzQOs7aE7it4Mf4aiDyvpkp5tsIBCi0lS1X1Cfr6QH6Ppfwnrwh8vj5LCzcDW5eJRDI8A6FpL9nkVY70PL6d1fLGdv0fwe4p/s1500/header.jpg)
LEGO® parts 73763, 73764 & 3863: A worm gear family | New Elementary: LEGO® parts, sets and techniques
![LEGO® parts 73763, 73764 & 3863: A worm gear family | New Elementary: LEGO® parts, sets and techniques LEGO® parts 73763, 73764 & 3863: A worm gear family | New Elementary: LEGO® parts, sets and techniques](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgAt_WeltlnDlYWejPG9YmBsxNxlWFtfoN0vfWkb6pWARcrz863N0gG8TgXKWFT8K1YvDH1zPYhpsHBOpSPLnk4ThkwcULq8z5HNqWxp-eguggWfT39g2QlMQ1PRwgHbHCO9D3GFplpTKO-uS9f9YXybHBRvlwu99A4vmN1WVjqnO3sxIJyDVV88AnQUkg0/s1542/gbc.jpg)
LEGO® parts 73763, 73764 & 3863: A worm gear family | New Elementary: LEGO® parts, sets and techniques
![LEGO® parts 73763, 73764 & 3863: A worm gear family | New Elementary: LEGO® parts, sets and techniques LEGO® parts 73763, 73764 & 3863: A worm gear family | New Elementary: LEGO® parts, sets and techniques](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjpilGgBDuJp14V8IkKAMJt3musMTobHxx40SsVQ2gNHb0j7szmkAP3ZiM8rOtZ6wnqI8iKmXmQrNfMFnl-s-ep8D3-YoB9ia-J25gL56YD9r4X5OgqZTioVvb5NYepelgKMenxPy_iaa_h1S5ihjw5du2p7cPyV2FEGw1ML1VgKyYpOgqD_SLwVg9rwwCl/s1500/other_gear_B.jpg)
LEGO® parts 73763, 73764 & 3863: A worm gear family | New Elementary: LEGO® parts, sets and techniques
![LEGO® parts 73763, 73764 & 3863: A worm gear family | New Elementary: LEGO® parts, sets and techniques LEGO® parts 73763, 73764 & 3863: A worm gear family | New Elementary: LEGO® parts, sets and techniques](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgoR5_BpPX7abTOZOgXQl29vRYnxGqiivcVqhiE5cu94V1zCpTISG6Z68K0BliS84PRg5U8FZ0AZUZnK2qSyD9aCS5StbOlvKe00w0z0bp_JdA2PArYJR0mhn0skPkDrLqLCLaV-hgbmXo2xw-pA526uOQ-Hc1Gi9XIvfYyXzIWJMb1uqGZOTcxvf2Mc4Qh/s1336/compare.jpg)
LEGO® parts 73763, 73764 & 3863: A worm gear family | New Elementary: LEGO® parts, sets and techniques
![LEGO® parts 73763, 73764 & 3863: A worm gear family | New Elementary: LEGO® parts, sets and techniques LEGO® parts 73763, 73764 & 3863: A worm gear family | New Elementary: LEGO® parts, sets and techniques](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjVKIg5p9TMBXiMFpqoNwepbXHB68J_i0zpy0pnFOBw3c7eaPxOq_JO1_RyM81FPsJM-ABPRjQ5d6Ka5rm2fQe5M6pI_YWgb_gndriMiYvLbrEhceRnbJ2eNuYnJoGpaL6FojoUTLRX445q3o86a2GIpad-1YFyKS8qb8XAl4hSVYJnUNMEjE1JAVeA7KYH/s1000/other_gear_A.jpg)