Technical specifications:
Material cage: aluminum
Material screws: steel
Technology: Exact Actuation, Cage Lock, Type 3.0 Roller Bearing Clutch, X-Sync 2
Gears: 12-speed
Cage: long version
Roller blades: 12 teeth (top) and 14 teeth (bottom) X-Sync
Color: Black
Weight according to the manufacturer: 290