For sale is a PAIR of Bakker industrial magnets. They are 12x6x1 3/4 inches in size each. I believe that these are called "sheet separators". They were installed on special steel bases to help separate steel sheets to be processed by a Trumpf industrial cutting laser. Four pairs available, but you are bidding on one pair. Bid on the quantity of two to get all four magnets. They begin to attract or repel each other at extremely long distances. WARNING: THESE MAGNETS ARE EXTREMELY DANGEROUS AND THEY CAN EASILY CRUSH YOUR HAND OR FINGERS OR OTHER ORGANS. YOU ARE ASSUMING ALL RESPONSIBILITY FOR THEIR SAFE USE. These magnets are unreal, so strong magnetically, I have never seen anything like that, and I sold a lot of industrial magnets. They are sold as a pair, each pair has a book stuck between them. They are so strongly attached, we can barely move them with a big pry bar. But it is better with a book between them, than with them stuck together without a book. They are also much safer stuck together, as they easily can suddenly jump and injure someone. Stuck together, they are almost magnetically inert because their fields cancel out. This is why I sell them by the pair. Each magnet has bolt holes in the back to attach handles or lifting devices.