These connectors are used to connect the wing standoff rods to the lower spreader rods. These connectors are made of a strong but flexible rubber and are available in different sizes. They are all sold in pairs of two.

The size listed above is the size of the spreader bar hole, so if you are fitting the Stand Off Connector to a .2200 rod you would probably want a .200 connector for a tight fit or a .230 connector for a looser fit.