Repeat "Eco" Foam Wheel Hubs 4mm x 0.75 - Pair - V2 Size_16mm 4mm) tip-to-tip (effective) Blade Thickness:

4mm) tip-to-tip (effective) Blade Thickness: 6

Weight: 38g

We don't recommend running this off a 9V battery

They take up very little space but can handle more than enough motor current for your robots

Repeat "Eco" Foam Wheel Hubs 4mm x 0.75 - Pair - V2 Size_16mm 4mm) tip-to-tip (effective) Blade Thickness:Want some cool GOLD wheels for your robot? Here's your chance and with added functionality over standard hubs, and at a lower price. Made from gold anodized 6061 T6 aluminum End plate screws in with 2x M3 x 8mm flathead screws 0. 75 size hubs are held onto the shaft with 2x oversized M4 x 4mm setscrews 0. 5 size hubs are held onto the shaft with 1x oversized M4x4mm setscrews Come with holes for 3mm or #4 screws to mount a pulley to the inside of the