What Is a Magnetic One-Touch Card Holder?

A magnetic one-touch(sometimes just "one-touch" or "screw-down") is a two-panel rigid acrylic card holder. The card sits in a recessed well in one panel, the second panel closes over it, and magnets set into the corners (or screws through them) hold the two halves shut with the card locked in place — front and back, zero internal movement. It differs from a toploader in one important way: a toploader is open at the top and the card can still slide or rattle inside it, while a one-touch fully encloses the card with a snug, custom-cut recess. That makes it the standard holder for displaying or long-term storing a valuable raw (ungraded) card — not for shipping a single card cheaply, and not for a card that's already inside a grader's slab.

• Screw-down. Four small screws at the corners hold the panels shut. Cheaper, and the screws can be removed and re-tightened repeatedly without wearing out — useful if a collector expects to open the holder again. The tradeoff is fiddliness: a dropped screw or stripped hole is a common annoyance, and overtightening can crack the acrylic or press a visible ring into a soft card surface.
• Magnetic (snap).Small magnets embedded in the corners hold the panels shut with a firm snap — no screws, no tools, opens and closes in seconds. This is the more common choice for display today, and the reason the whole holder category is usually just called "a magnetic" or "a one-touch" regardless of which closure it actually uses.

Either closure does the same core job — clamping the card motionless between two rigid panels — so the choice comes down to how often the holder will be opened, not protection quality.

Like a toploader, a one-touch is sized in points (pt) to match what it holds, and the recessed well has to match the card's thickness or it will still rattle inside a "closed" holder:

• 35pt — a standard raw single card with no added thickness.
• 55pt–100pt — a card with light extra thickness, or one a collector wants sleeved before it goes into the one-touch.
• 130pt and up — booklet cards, thicker die-cuts, or cards carrying a memorabilia swatch. See What Are Relic and Patch Cards? for why swatch thickness varies card to card.
• Oversized / "senior" one-touches— cut wider for vintage tobacco-era cards, postcards, and other pre-war formats that run larger than the modern 2.5" × 3.5" standard.

Standard clear acrylic one-touches let UV light through, which over years of shelf or wall display can fade ink and discolor card stock — the same reason a print left in a sunny window fades. Two upgrades address this:

• UV-protective acrylic — filters out most UV wavelengths at a modest price premium over standard clear acrylic. This is the reasonable default for anything going on permanent display.
• "Museum glass" one-touches— use actual glass panels with an anti-reflective, UV-filtering coating instead of acrylic. Higher cost and heavier, but the clearest optical quality and the strongest UV protection, typically reserved for a top-tier card that's going to hang or sit on display indefinitely rather than get handled.

• A card that's already graded.A graded card lives in its grader's sealed slab — PSA, BGS, SGC, and the rest — not a one-touch. See What Is a Sports Card Slab? for how that holder differs, or What Is a Slab Display Case? for the multi-slab display case a one-touch is sometimes confused with.
• Bulk storage of a large collection. One-touches are priced and sized per card, which makes them expensive and space-inefficient for anything beyond a handful of standout pieces. A binder with penny-sleeved pages, or a bulk storage box, handles volume far more cheaply — see How to Store and Preserve Sports Cards for the full lineup.
• Shipping a single card by mail. A one-touch is bulkier, heavier, and pricier to ship than a semi-rigid sleeve or a taped toploader. See How to Ship Sports Cards Safely for the mailer-by-mailer breakdown.
• Submitting a card for grading. Most graders want a raw card sleeved and top-loaded for submission, not sealed in a one-touch. See How to Submit Cards for Grading.

Confirm the exact card with Identify & Research — free-path first (on-device OCR, catalog match, and fingerprints). For the full holder lineup — penny sleeves, toploaders, magnetic one-touches, and bulk storage boxes — see How to Store and Preserve Sports Cards. For the rigid open-top holder a one-touch is stepping up from, see What Is a Toploader?. For the thinner, flexible-but-stiff holder used for grading submissions and cheap single-card shipping, see What Is a Card Saver (Semi-Rigid Sleeve)?, or open the full guides library.