Title: Very weak
Review: Do not buy this if your planning on working on a car head. There are no instructions. I'm working on a Ford GT-40 head and the clamp bent before it compressed the spring so I didn't feel right returning it. I straightened it and tried it again backwards with the screw handle on the valve side, of course it bent again.I straightened it again and welded some gussets on and made an aluminum adapter for the screw. All is well now.
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