56-57 Chevy 4-Door Hardtop Front Door Window Regulator Idler Bracket.
This bracket mounts to the inner door; it is used to help guide the window regulator. This is the track that the window regulator rollers rides in. Two needed per car, one per side. Made from galvanized metal, so they won’t rust. Comes with mounting hardware. Works on all 56-57 Chevy Bel Air & 210 4-Door Hardtop Models. The idler is for the front doors. Made in the USA.