If your talking about the black plastic bar on the side of the slide out, that is the locking device when the slide is 'in'. What you see is a hard plastic cover covering the mechanical links. Not all slides have them, but if they have them, you will always find 2 on each slide. I spray dry lube into the working parts 2x a year but have never had an issue.
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Bill & Brigitte
06 Windsor PEQ, Cummins 400 ISL
2014 Honda CRV or 2012 Jeep
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