This is the "Cadillac" of the Pro-Mold trading card holder line. The 1/2 inch one screw is basically an oversized regular size one screw. With the larger size the trading card really stands out.
This holder also features recessed, "arrowhead" corners to protect the card's corners if you drop them. This holder provides 5 years+ of UV protection to prevent the card and autograph from fading, and Pro-Mold one screw screwdown holders are the only screwdowns of their kind that have UV certification.
These are proudly made in the USA of the highest quality raw material and are archival safe.