David, several have answered your "what is that" question. I will add that most new rigs come out of the box with their power leads tinned. You can tell because the bare wire on the ends will be a bit stiff, and there will be no loose strands sticking out. This makes it easier to push the wire through the holes in the bolt, somewhat like threading a needle. It also makes crimping and soldering easier, but as someone said, is not totally necessary for those purposes. ----- Original Message ----- From: "David Pearson" <[log in to unmask]> To: <[log in to unmask]> Sent: Saturday, March 29, 2014 8:38 AM Subject: possibly another silly question Firstly, thanks for the responses regarding radio connections to a power = supply, I believe that the attachment bolts can be removed completely, = so it appears that ring terminals would be best. Using a small zip tie = to mark one of the leads is also quite helpul. One response mentioned = that the power lead ends should be tinned. Not exactly sure what this = term means. What does this mean, and why is it done? Thank you all again, David S. Pearson-wa4dsp