Guy is funny as can be. Must have engineering degrees in many areas. Language is s bit rough at times.
He tears stuff apart to check it quality of construction...... yes, he even took apart a brand new $700 Hilti cordless drill.
This one is a Chinezeum pump. Ya gotta subscribe ant look at his videos. I think his main vocation is working on heavy equipment, motors, hydraulics etc, but his shop is full of tools, welders, milling machine, lathes even a CNC milling machine.
This is an old one.