From The SRAM Website:
New NX Eagle™ trigger shifter means on-demand gear selection throughout the entire wide range Eagle™ cassette. The massive range means you never have to worry about having the right gear for the terrain. NX Eagle™ means easy, intuitive shifting every time for every rider.

Speeds12 Speed
Color (SL)Black
Weight (g) 112g
Weight based onMMX Clamp