Looks like excellent quality - Chiappa Firearms 970387 X-Caliber Adapter Set 12 Ga 8 Pistol Calibers Black

I worked in a machine shop over 25 years, and these look very nice. I have not yet put any rounds through them, but visually they look excellent. the only complaint that I have is that the .44magnum adaptor is not marked .44magnum/.44 special. the .38/.357 is marked, but not the .44, I called Chiappa and was told that they didn't test it with the .44special, so they didn't mark it. when it comes to firearm related things I don't want to assume anything. I've been around firearms most of my life and I'm pretty sure there is not a problem, BUT I sure do wish that they tested it with the .44special and marked it. for me it's probably not going to be a problem because I don't own a .44special but I figured I would note this for those of you that do.