This is the 46 Tooth 64 Pitch Aluminum Pro Pinion Gear from Robinson Racing.
FEATURES: Machined from aircraft aluminum
Lightened and coated twice with a super hard black anodize
Ideal for 64 pitch on-road applications but can be used in off road
models as well
INCLUDES: 45 Tooth 64 Pitch Aluminum Pro Pinion Gear
One 5-40 x 1/8" Set Screw (1/16" hex size) - RRPC1001
REQUIRES: Installing on motor shaft
SPECS: Number of Teeth: 45
Gear Tooth Pitch: 64
Overall Diameter: 0.73" (18.5mm)
Hole Diameter: 0.12" (3mm)