Configuration: 20 card holders per box.
While certainly not the first one on the market, the Pro-Mold Magnetic Holder is definitely the best magnetic trading card holder on the market. The Pro-Mold Magnetic Trading Card Holder features a gold magnet that provides a super-strong enclosure, which allows the holder to stay closed when dropped while it's still easy enough to open up and put a trading card in it. This holder features a tab on the top of each side that allows you to use a quarter or set of fingernails to open the holder up easily. This holder also features recessed, "arrowhead" corners to protect the card's corners if you drop them. This holder is now made of a raw material that provides 5 years+ of UV protection to prevent the card and autograph from fading.