Ahead stem with adjustable angle. Made from aluminum 6061-T6.  Special mechanism secures stem from accidental loosening. Preferred angle adjustable by allen key.

Steerer size: 1-1/8" 
Handlebar diameter: 31,8mm 
Angle: -55° to +55°
Length: 108mm; 128mm
Weight: 355g (108mm); 380g (128mm)
Colors: black mat