A card holder made of two rectangular plastic slabs connected by 4 screws is commonly called a screw-down. The card rests between the two slabs of plastic and the screws are tightened to hold the card. Screw-down holders are now generally thought of as a bad way to store cards. The card can be damaged and even destroyed by a screw-down. In some cases, the surface of the card can actually peel off when the screw-down case is opened. To avoid the card peeling a recessed screw down is needed. Also screw downs also come in different thicknesses and different screw configuration. Now a days screwdowns are being replaced by holders with magnets instead of screws, which are more easier to open and change cards with worring about uneven pressure on the card and stripping the screw.