This is the Differential Pulley and Side Cover for the Traxxas Nitro 4-Tec.
FEATURES: Plastic construction
Black in color
INCLUDES: One differential pulley
One differential side cover
Four 3x10mm self tapping flat head screws
REQUIRES: None, item is a stock replacement part.
SPECS: Number of teeth: 34
Overall diameter: 31.5mm (1.24")