Description - 21 teeth gear. Diameter 16,1 mm.
A 21-teeth gear. Module 0,7. Made of Ertacetal (special plastic for gears). Perfect for performing mobile mechanisms, engines, etc.
Dimensions (see picture):
- Z = 21 teeth
- R1 = 16,1 mm
- R = 14,7 mm
- D = 4,0 mm
- f = 5,05 mm