The product is a NOS (New Old Stock) GM right-hand seat adjuster spring for vehicles from 1961-1964, including Chevy, Pontiac, and Oldsmobile models. This vintage part, with OE/OEM part number 4309104, is designed for adjusting the right seat in these classic cars. THE OEM BOX FLAP WITH THE ORIGINAL PART NUMBER ON IT SHOWN IN THE PICTURES WILL NOT BE INCLUDED IN THE SALE UNLESS THE TOTAL QUANTITY FOR SALE ARE PURCHASED.