Magnets don't seem to sit flush in the jaws of the TRISENSE 4" Magnetic Vise. The first set I had was the worst. As pictured, one of the magnets is sticking out a lot. The hole the magnet is in doesn't seem to be deep enough. The jaws are therefore not properly seated in the vise. I sent them back to Revain and the seller sent me a second set. The second set was a little better, but one magnet still stuck out a little. I needed them for a completed project so I went ahead and used them. I'm giving these jaws two stars in my review instead of one because Revain replaced them, but I recommend buyers look for something else and avoid these particular jaws, they're just poorly made.