SHIMANO Alivio M410-SGS Rear Der Cage Lengths: SGS-long, Capacity: 43T, Chain Wrap Capacity: 43teeth Derailleur Action: Top-Normal (Traditional), Derailleur Color: black Drivetrain Spacing: Shimano/SRAM 8, Largest Cog: 34teeth, Min/Max: 11/34T Shifter/Rear Derailleur : Shimano, Speeds: 7/8sp, Speeds: 8sp, Weight: 311g, Weight: 312g