This is the Shimano CS-5700 105 10-Speed Cassette.
Features:
- Light weight Aluminum sprocket carrier
11-25T Specifications:
Cassette Body Type: Shimano/SRAM 8, 9, 10 Speed
Cassette Cogs: 11-12-13-14-15-17-19-21-23-25
Drivetrain Speeds: 10
Color: Silver
Weight: 245 grams
11-28T Specifications:
Cassette Body Type: Shimano/SRAM 8, 9, 10 Speed
Cassette Cogs: 11-12-13-14-15-17-19-21-24-28
Drivetrain Speeds: 10
Color: Silver
Weight: 255 grams