That is more grinders than I've ever seen at once, wow. You can always tell the semi-pro guys, they bring their own shade. Stoney I dug one of those out of the back of the old cattle shed, just slightly rusty, another ten years soaking and it would free up. I thin JD had one too for the sickles. Clamped across the mower frame. I do collect hand crank grinders, if the price is right.