Personally, I would never use second hand track as you don't really know what you are getting. Over time track will...
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HO/OO Scale Buffer Stop with Flashing Light (wired) New Buffer stop for DC layouts.Simply wire to a power supply. (12-16v AC/DC.With flashing red LEd light.
HO/OO Scale Buffer Stop with Flashing Light (DCC Wireless) New Buffer stop for DCC layouts.With flashing red LEd light.
Buffer Stops with Light for DCC, wireless
OO Scale Buffer Stop (Pack of 5)
HO/OO Scale Buffer Stop with Light analog & digital
OO Buffer Stop & Light