This is the Hot Racing brushless Black steel 32 Pitch 21 Tooth Pinion Gear.
CNC Machined light weight Precision Gears with Standard 4140 steel
Reduce internal rotating mass and Increase efficiency.
Casehardened for durability.
Heavy duty 4mm set screw for brushless power
YOU WILL RECEIVE:
One 32 Pitch 21 Tooth Pinion Gear with 4mm set screw
Inner diameter: 1/8" (3mm)