I bought this for my model 3 (base model). Not much I can comment about it. You get what they say you get - no surprises. I haven't had to actually use it yet, but it seems fine. The fabric case it comes in makes it easy to lug around.
I usually don't have it in the car - only when I'm driving outside Sydney. It takes up an annoying amount of space in the car, but I think it's necessary to have a spare when driving around country NSW.