Shimano Tiagra HG50 Cassette, 9 Speed

• Incorporates shift ramps and specially contoured tooth profiles
• Improved chain control to provide a fast and precise shift
• Plated sprockets for smooth performance and improved durability
• Drilled out sprockets for weight savings over previous model
• 12,13,14,15,16,17,19,21,23 cogs
• Shimano or SRAM 9 speed
• Silver
• 214.0 g