On 2009-05-17, Chas wrote:
I have used one of these clamps to replace lower control arm ball joints of
a motor vehicle. Saves having to remove the control arm and spring.

Here's a picture of one:

http://igor.chudov.com/misc/ebay/tmp/tmp-4463.jpg

This one, I definitely am not going to sell. But I have some partial
ones that I will sell.

i