SparkFun Electronics Commentsurn:uuid:214d0e4e-f1b1-d287-ce26-ac5b4c9f82492024-03-29T07:13:45-06:00SparkFun ElectronicsCustomer #518036 on ROB-12537 - Precision Disc Wheel - 2" (Black, 2 Pack)Customer #518036urn:uuid:1b663097-8527-a7a7-6806-c5ce3e12a85a2014-07-18T22:54:35-06:00<p>Is the OD of the disc 2" or does that include the tread piece as well?<p>For my robotics project I need about a 26mm radius so I think these will be barely too small.</p><p>edit: I'm assuming it's including the tread because I have the 3" wheel from the same company and that includes the tread.</p></p>