This was the headset used with the popular XT M737, M739, and M750 groupsets. Gorgeously anodized in silver, with a silver holographic logo on the bottom cup. These were bombproof, buttery smooth headsets. The sealed cartridge bearings keep all but the most aggressive contaminants out, providing many years of high performance. On top of looking and performing well, it's super light! Great for retro mountain bikes, or even road bikes!