This is Team Trinity 64P 35T Lightweight Pinion Gear.
For: RC on-road, oval and even the newer off-road carpet racing
Hard anodized for longer life
Uses 3mm set screw (included).
Standard 540 motor shaft size.
1/8th Shaft hole
Overall all width, tooth face & hub, 9mm
Tooth face width, 4mm
Easy to read tooth size etched on hub
Team Trinity 64P 35T Lightweight Pinion Gear (1 pc)