Another SunRace quality product. Compatible with shimano, sram and other derailleur systems. 2:1 Actuation Ratio Speeds: 9 Cable Adjuster: Yes Clamp Screw: SUS302 Stainless Steel Large Lever: Aluminum Small Lever: Engineering Polymers Cable Type: Slick Galvanized Casing Compatibility: SP Average Weight: (R) 156g / (L) 153g