a vintage bicycle component designed for mountain bikes. This specific model was famously used on classic bicycles like the 1985 Team Stumpjumper. eBay eBay +1 Key Specifications Material: Polished duraluminum (forged aluminum) with steel bolts. Compatibility: Designed for 1-inch threaded steerers with a 22.2 mm shaft diameter. Clamp Size: Features a 25.4 mm bar clamp, making it compatible with standard flat bars or some flared drop bars. Design: Includes an integrated front cable stop, which is a stepped hole at the top of the stem for brake routing. eBay eBay +1 Features This stem is highly regarded for its "hunk of polished duraluminum" construction and classic aesthetic. It typically has the "SPECIALIZED" logo stamped on the side of the extension.