Tireless Digger Excavator Metal ModelTireless Digger Excavator Metal Mode SPECIFICATIONS: 100 Pieces Difficulty level 3 Hours to assemble (average): 4 Model size (cm): 13,5 x 11,5 x 7 Model size (inch): 5,3 x 4,5 2,75 Lifting Bucket Turret Realistic Design PROTOTYPE HISTORY The invention of mechanisms has always been aimed to facilitate human labor. Therefore, in the era of large scale construction in the 15 16 centuries, an earth moving machine could not but appear. It was invented by