I used a nutdriver to lightly tighten up my speaker terminals on my Home Theater amp. Why I needed to get them wrench tight I don't know, but as you would guess it I broke one of the post in half. I thought I was a good judge of torque but I was wrong. Ended up with a four channel amp for the time being. I will never do that again. Anybody need a Sherbourn 4/1500?