I got these for a couple reasons. I have an older pair of red and black from a now defunct department store. After a recall (or two) from another store, the ratchet style kind of scares me now. I also got one of those cool hydraulic lifts that puts your car up about 20”. The old red / black only top out about 15”. This will support my cars all the way up. I went with the flat vs v style due to the lift using the rails. These things are solid. I mean good stuff (compared to 30 yr old ones I have). Let you know if they fail, but they gave me a sense of security and reach the height of my lift.