TECH APPRAISAL:
- Derailleur arm tensioner
- For rear derailleur or mech
- Include 4 pieces
- Brand: Tektro
- Model number: 104A RBP series
- Instructions to fit are included on back of the packaging
- Compatible with most popular derailleurs
- Increase tension in rear derailleur
- Faster shifting
- Improved chain tension
- Colour: black
- Material: stainless steel (longer lasting)