That's called a farm jack around here.
It's probably the most universal jack you can get.
I don't use it for blades though, I use a chain hoist.
If I had to change blades in the field, I have a shop jack in the back of my truck.
I had to change a tire on my pickup once and used the GMC factory jack.
After that experience 2 things happened, (1) I wanted to find the guy responsible for putting it in a vehicle and kick him in the balls, (2) I bought a low profile shop jack from Harbor Freight and put it in my truck.
Remembering all my departed friends.
Well, I hope everyone is happy now.