This is a DCC Concepts DCC-Tag25 Bus Terminal Tags (25 Pack)

Pack of 25 ‘DCC-Tags’. There is no easier way to mount and secure the power bus (With ZERO need for cutting) than with these tags. Left and right power bus is secured in the larger tag holes, and droppers are easily connected by soldering into the corresponding eyelet holes. Pre-tinned for easy soldering, tags also totally remove the need for added insulation and give total flexibility and easy maintenance. Easily secured with a #4 wood screw too!