Its the "side mount & bottom mount drawer slide mount socket". Inprinted on the bottom is "ADAR 8 LEFT". It is 3 and 3/4 inches long.
I found a replacement part but it does not last and breaks easily because it is shorter and does not support the weight. The replacement part is made by LIBERTY and the part number is D688SEC-W-TX
Please help, I'm trying to find the original part!
Thank you,
Rosa
![User submitted photos of a drawer socket.](/images/pictures/2014/09/40781.jpg)