I'm wanting to start simple. I'd like to make a 10' vehicle swing gate.

I have the hinges and gate closure clasp already picked out from home depot.

I noticed on the website a set of four (looks like) threaded casters but I don't see spring loaded casters that helps the swing gate stay fairly level by following the topography of the ground as the gate rolls open.

Does maker pipe offer spring loaded casters for a 10' swing gate or other such projects that fit inside common conduit sizes?

If not I could use a grainger product but I would need to make an adapter sleeve to tightly mate the two details.