The challenges of riding a mountain bike should be kept to roots, rocks, mud, trees, jumps, drops and breathing. Putting total control of your gear selection into the thumb of one hand, it&&';;s simple to find the right gear, right now. The GX Eagle(TM) trigger shifter is the control center of the Eagle(TM) drivetrain. Its internal works have been updated to include a 12th gear, and improved to enhance trigger feel, precision and durability. SPECIFICATIONS WEIGHT - 122g SPEEDS - 12 COMPATIBILITY - All levels of Eagle(TM) drivetrain systems RECOMMENDED GROUP - GX Eagle(TM) MATERIAL - Forged aluminum trigger GEAR INDICATION - No