SunRace RD-M37 Rear Derailleur

This derailleur is a good replacement for a entry level mountain bike drive train with a triple crankset.

• 2:1 Actuation Ratio 
• Speeds: 7 
• Cage Type: (L) Long
• Mounting Type: (B) Bracket
• Derailleur Material: Engineering Polymers
• Inner Link Material: Steel
• Cable Adjuster: Composite
• Average Weight: 270g