Timing pulleys and belts will slip under tension, timing belts have teeth that ensure a positive lock to the pulleys.
Pitch (distance between tooth centers): 3mm
Belt Width: 4mm or less
Material: 6061 Aluminum
Includes 4-40 setscrew for fastening to shaft.
| Number of Teeth | Pitch Diameter | Outside Diameter | Weight |
| 9T | 8.59mm (.338") | 7.89mm (.313") | 1.4g (.05oz) |
FingerTech has a great pulley and belt calculator to help you fingure out what length belt you need.