70mm diameter nylon low rolling resistance wheels with groove along the rim, suitable a variety of solar model car projects. Each type of wheel is 4.0mm thick.
Yellow.
Code: SW70AGR (7.0mm dia. hole); SW70EGR (10.0mm dia. hole).
Pack of 10. Please specify type and code when ordering.

NOTE: Used with ORING55. This O-Ring is approximately 1.0mm diameter and can be stretched to fit over the wheel to sit in the groove around the wheel to increase traction to the track.