This is a set of 4 edge caps .. as shown.. that sleeve over the alloy trim of the 78-81 Firebird TA & Camaro T-Tops.. the GM t-tops .... the thin tongue posts attached to the centre roof section.. slide into these once fitted to the tops broken edge trim.
Best way we have found to fix them on is with Hard as Nails or similiar extremely solid bonding glue.
This is a set of 4 for one car.