Thanks for Frank's and Ted's replies. Avdel's and Bollhoff's are interesting. However, I demand those expansion bolts to resist large shear forces in most of my applications. Also, those special tools are a kind of problem to our applications, not because those tools are expensive or not. We sell our products to installers. We only can install about half of those expansion bolts in shop and then installers need to place some expansion bolts on-site. Simply to say, we can't buy those tools for so many installers of ours or we can't let our installers to buy them. That's a kind of trouble thing anyway.
Thank you,
