It is the second kit of the series

BLACK REAR BULKHEADS (FITS ALL VERSIONS OF THE T-MAXX & E-MAXX LINE OF TRUCKS)

Two 6mm wide aluminum 12mm hex drive washers (rear) Two 8mm wide aluminum 12mm hex drive washers (front) Four 2x5mm clamp screws One 1

E2X - Easy to Assemble

The multi-varied tread design increases forward/reverse and lateral traction with serious biting across the footprint

Exotek Racing - Rock/Baja Rey Heavy Duty Carbon Fiber Top Plate, 2.5mm Bodies It is the second kitFactory race style heavy duty carbon fiber top plate for the Lost 1 10 Rock Rey and Baja Rey trucks. Made of genuine 2. 5mm thick glossy carbon fiber for great durability and lightweight. At 19gr, this carbon top plate is 8gr lighter than stock for a lower center of gravity.