1:03:03
World’s Most Dangerous Gear Casting Job | The Secret Art of Making Giant Machine Gears by Hand
1:26:52
Most Incredible! Recycling & Extraction Industries in Asian | Top Factory Manufacturing Videos
1:03:13
1015 MEGA MÁQUINAS que NO CREERÁS que EXISTEN | Ingeniería Extrema en Acción
33:01
How incredible Spanners Wrench Making At Road Side Factories Process mass production
1:44:23