This pair of sealed headset bearings are original replacements for those found in various 1990s Shimano headsets including:
- Dura Ace – HP-7410
- 600 Ultegra – HP-6500
- 105 – HP-5500 and HP-5501
- Deore LX – HP-M563 and HP-M564
- STX – HP-MC30 and HP-MC31
Sold as a pair for top and bottom of headset, model 78V 9803.