2020
PROGRESSOR BLUE

BALL BEARING, SHORT CIRCUIT SPARK, OSCILLATING BOLT ON A SPRING, DC MOTORS, VOLTAGE CONTROLLERS, SPRING IN METAL TUBE, RATCHET, CHAIN, CREAKING WHEEL, SPRINGS, CLUSTER OF METAL STRINGS, CLOCK COILS, WIND-UP TOY MECHANISM

2020
PROGRESSOR RED
2020
PROGRESSOR GREEN