The product is a set of vintage Campagnolo Croce d'Aune brake calipers from the 1980s or 90s, designed for both front and rear brakes on a bicycle. Known for their durability and performance, these calipers are highly sought after by cycling enthusiasts looking to restore or upgrade their vintage bikes. With the prestigious Campagnolo brand behind them, these brake calipers are sure to add a touch of nostalgia and style to any retro cycling setup.