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[UngarLinski]

In one picture you see the wooden cushion back of an office chair with fives holes cut out. In the other picture you see the chair back with three inserts/prongs/clips that get inserted into the holes of the cushion back so that the cushion is mounted onto the chair. What are those three plastic inserts/prongs/clips called? They seem to be very worn and it's not seating into the holes properly for a flush fit.

ch2.jpg (408.13 KiB) Viewed 407 times

(1)Chair.jpg (1.66 MiB) Viewed 407 times