I wanted one of these extensions for my floor jack-
But, they're made in Denmark and the US distributor doesn't carry them. They said they'd order some but I'd have to pay shipping and it'd take a while.
So, instead I went down to the metal store and bought 3 chunks of metal. Then I took them to a machine shop. Then, I welded them together.
I'm 100% certain I should have paid the shipping and waited :)
However, I have a very cool jack extension now, so next time I have to lift dad's jeep, I'm ready!