These beautifully machined aluminum hubs come with a generously thick rubber tire for maximum traction.
The tire mounted on the hub measures in at 31.2mm (1.23in) diameter and overall width (including set-screw flange) of 17mm (0.67in) wide. The hub is drilled for a 3mm axle, but the pilot hole is 1/16", so it's easy for you to drill it out to exactly whatever size you require! It's a nice, fat, beefy wheel ideal for small robots. Secure it to your motor shaft with the included 4-40 hex grub/setscrew (requires 0.050 hex wrench).
The wheel assembly weighs 12 grams.
Please note, these are sold individually, NOT in pairs.