These are incredibly strong large sphere magnets. Unlike our smaller sphere magnets, these ones are strong enough to pinch hard. These magnets have 2 poles-just like earth.
Sphere magnets are very unusual and hard to find.
These are nickel plated. They are very strong, if allowed to come together too fast repeatedly, damage may appear to the plating at the poles, although I have yet to see this happen, I anticipate it could. These should be handled with care and kept away from children.