I love stuff like that. I used to buy insulated versions of these clamps, but I can get the job done cleaner by using them and heat shrink tubing. I place a piece of heat shrink tubing over the wire, crimp the connector with a Channellock 909 crimp tool, and use a heat gun to shrink the tubing. Less cumbersome method when connecting the terminal block. Also, I use colored heat shrink tubing to identify the positive and negative leads. The material is thicker than most clamps I've found in stores, which avoids damaging the clamp when tightening the screw.