This is a Western Robotics 6" Banana Plug. These wires have bullet plugs on one end, and are open ended on the other.
This product was added to our catalog on January 27, 2011
Saturday, Jun 11 2011 (about 10 years ago)
Western Robotics 6" Banana Plug (Black/Red) (2)
pretty good leads, haven't had any problems. good bang for your buck.