Looking for second hand TIRE CHAINS for 19.5L-24 John Deer Loader

[skyhook]

That arrows indicates forward traction. Yes you can reverse the tread, but you will get less forward traction and more reverse traction. It happens often on the front drive axles of graders and front end loaders.

I think your miss understanding the term "unidirectional",,
it refers to traveling in one direction only.