42-66 Chevy/GMC Small Rear Window Gasket w/ Chrome Lockstrip. This rear glass kit is used with 42-66 Chevy/GMC small rear back window trucks that do have a factory chrome trim around the glass. Rear glass rubber kit includes the seals and chrome lockstrip needed to complete the install. Gasket is constructed from ozone resistant EPDM and made to original OE specs. Limited Lifetime Manufacture Warranty.