TIAGRA Rear Derailleur RD-4700 ( Select Option=SS)

• Consistently smooth and light shifting operation
• Compatible only with ST-4700 and ST-4703 shifters
• Wider, Rider Tuned 10-speed gearing options
• Robust adjustability
• Max Cog: 34t (GS); 28t (SS)

Here is some important information regarding delivery