Working with the skid steer lift capacity, it is all math on how much the forks weigh to what you want to lift. I have some really heavy-duty forks, but those take up my lift capacity numbers, so I bought these forks for some of my more straightforward needs so I have more lift capacity left with the lighter-weight forks. With these rated at 4K lb lift and my skid steer rated at under 2K lift, these forks allow me a couple extra hundred points of lift vs my heavy-duty ones.