I've got a 4000lb capacity Schwaben low-profile long-reach jack that was annoying to use because the caster wheels don't self-steer, they don't always rotate, they just drag and scratch the concrete. I bought these 6000lb capacity replacements hoping to fix that flaw. I needed to use a split washer inside of the hole of the jack to keep the replacement caster wheel firmly centered, and I needed to buy a (cheap) thin 24mm service wrench to install the wheels, but it's all worth it! The giant jack is finally easy to roll around and the quiet curses using the jack have stopped. I was so impressed with the quality of these that I felt I owed a highly positive review to the company name on the box, thanks!
