For that little bit of extra speed, FSA Ceramic Derailleur pulleys use low resistance long wearing Silicon Nitride Ceramic hybrid bearings, and pulley wheels made from durable DuPont Zytel™. These pulleys will far outlast normal pulleys and are compatible with most derailleur systems, including Campagnolo (10T) or Shimano (11T).

Features:
• Low resistance long wearing Silicon Nitride Ceramic Hybrid bearings
• Pulley Wheels made from durable DuPont Zytel™ will far outlast normal pulleys
• Pulleys have Teflon content to reduce chain stick
• Compatible with almost all derailleur systems
• For Campagnolo (10T) or Shimano (11T) Derailleurs
• Campagnolo compatible - Blue
• Shimano compatible - Red
• Weight: 20 grams