ida34

Don't use concrete blocks either. I use the but I always put a 2x12 over the top to spread the weight out. They will only hold weight if put down with the holes facing up and down with something to spread the weight out over the whole block. I have seen some people put them on end as if to use the half hole on the end as a nice thing to hold the axle of a car in place. These were not designed to hold weight in that way. They will crumble. That being said, I got the heavy jackstands from Harbor Freight and use them to hold everything. I also only trust them to half the rated capacity.

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Chuck Graham
1969 Kaiser-Jeep M35A2