I have a HUGE granite over hang project that I use a number of other larger steel supports for....and then last minute added 2 of these.....THESE ARE better...because the other products had no way to pre jack them up (forgot the word).....and the other products did not tell me to do that....so they are not solid, not tight and do not support as needed...... THESE supports since they are PRE LOADED (that was the word I was looking for)...... they are tight, and a great support! These don't work/ aren't enough for HUGE over hangs that go on forever....but anything less than that they are wonderful! ONE of the supports was not tight after install and I just added more to the screw after the fact and it was PERFECT! EXCELLENT PRODUCT....and WAY easier to install than the other thicker steel strait other products!