These are right angle wheel spacers.
Eliminates wheel lock up. Positions wheel at the proper distance from the strut to keep wheel spinning freely. For use with 5/32" diameter wire
Three Wheel Spacers
.9" Width: .229" (@ narrowest point) .378" (@ widest point)
Diameter: 5/32" (hole)
Note: This list may not be 100% accurate or up to date, and is meant to be used as a guideline for compatibility.