Set of 4 roll pins. We often use these with our #25 sprockets to mount them to the motor shaft.
Use these roll pins to fix sprockets to a shaft and keep them locked in place.
Steel Machine Key 3/16" x 3/16", 3/4" long. These keys are economical with high strength and will fit 3/16" keyways.
2WD self balancing robot! This kit is a perfect plataform for learning Arduino, PID control, serial communications(Serial, I2C, SPI), PWM signals, IMU filtering, etc.