These is a New 1955-57 Chevy reproduction part
#18-137 WINDOW GLASS TRACK / CHANNEL
New LEFT HAND (Driver's Side) door glass bottom metal channel for a 1955-57 Chevy 2 door SEDANS & WAGONS.
This part supports the bottom of the glass and the window regulator roller guide would screw onto this piece.
Fits all models BelAir, 210 & 150 2 Door Sedans and Wagons .
Included are the round head Phillips screws w/ attached star washer.
Track is 24" long.
Made in the USA !