Rack and pinion gear pulley plastic sharft worm gear reducer for robot DIY assorted kit- 34 Kindsrobot kits

These gears are used in laboratories, science education, and DIY models and RC-airplane/helicopter repair, as well as many household repairs like old music system etc. its a great toolkit for promoting DIY abilities, improving children’s, teen’s hands-on skills and divergent thinking.

1. Good Quality Material
2. Light Weight
3. Heavy Duty and Long Life
4. Good Temperature and Environmental Resistance