This 30 tooth silicone track set comprises two drive sprockets measuring 35 mm in diameter, and two matching idler sprockets along with mounting hardware. Product Description This track set includes a pair of 30-tooth silicone tracks, two drive sprockets measuring 1.38 inch (35 mm) in diameter, and two matching idler sprockets along with mounting hardware. The drive sprockets are designed to work https://elecena.pl/product/16396004/pololu-zumo-track-set-30t 2020-04-06 https://elecena.pl/product/16396004/pololu-zumo-track-set-30t 2020-09-01 https://elecena.pl/product/16396004/pololu-zumo-track-set-30t 2021-03-02 https://elecena.pl/product/16396004/pololu-zumo-track-set-30t 2025-07-09