New BCW 20pt. 4-screw recessed card holder. The BCW 4 Card Screwdown Holder is made of high quality, crystal clear polystyrene and measures ¼ inch thick. These screw downs feature a recessed area that keeps the card centered. Exterior dimensions 3 1/8" x 5 1/8". Holds all standard size trading cards. Check out my store for other card supplies, price guides and trading cards.