These are nice rubber wheels / rollers for your robot / gizmo project.
They are a pliable, yet firm rubber with a nice "tack" to them.
Dimensions:
Inside Diameter: 5mm (0.17 inch)
Outside Diameter: 15.5mm (0.52 inch)
Length: 10mm (0.34 inch)
Item weight is 0.01 pound.
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