This is the optional CNC aluminum gear differential case for the SC10 4x4

CNC aluminum construction, hard anodized diff gear
Black aluminum cover for easy assembly.
Direct fit hop-up requires no model modification for use

one hard aluminum differential gear
one black side cover
one gasket
Four 2.5 x14.8 mm flat head screws (2mm hex size)

Assembly and installation 2mm hex tool
gears from your stock differential