Shimano CN-5600 10 Speed Bicycle Chain 105 NOS NIB 116L Japan | eBay
The Bike Shop - Shimano- Cassette Sprocket 105 CS-5600 10 Speed The Shimano 105 CS-5600 10-Speed cassette featuring Shimano's "trickle-down" policy finally brings the wide gear range of 10-speed Dura-Ace and Ultegra
Shimano HG Hyperglide CS-5600 10 Spd Cassette 12-27 w/Matching Chain, light use | eBay