From all the negative reviews I was hesitant to buy them but I'm glad I gave them a chance. I'm more familiar with plastic snaps and KAM pliers, but I needed metal snaps for a few other uses. I figured I'd only give the syringes $25 if they didn't work. But they work great! I don't know why anyone has trouble with this. They work very well and I've had no problems with the clasps detaching from the fabric. I'm glad I bought them!