Neodymium Disc Magnets 10mm x 3mm (3/8 x 1/8 inch) N48 – Strong Round Rare Earth Magnets for 3D Printing, Crafts, Cosplay, Cabinet Closures & DIY (30 Pack)

When your 3D-printed box lid needs a clean snap-fit closure or your handmade bag needs a hidden magnetic fastener, magnet size matters as much as strength. These 10mm x 3mm N48 neodymium discs are one of the two standard sizes used in printed magnet seats – drop them into a 10.2mm cavity and they sit flush, no gap, no rattle.Each disc is roughly the diameter of a pencil eraser and about as thick as two stacked pennies. The NiCuNi triple-layer coating gives a smooth silver finish that holds up under repeated magnetic cycles without flaking at the edges. Magnetized axially through the flat face, they attach face-to-face for maximum pull or face-to-steel for repositionable surface mounting. At N48 grade, pull force reaches up to 5 lbs per magnet – strong enough to hold a printed lid closed, secure a fabric pouch flap through canvas, or fasten a lightweight cosplay panel through thin foam.Use them as snap-together closures in printed enclosures and modular assemblies, hidden fasteners in tote bags and craft pouches, recessed catches in cabinet door pockets, attachment points for cosplay EVA foam panels, and fridge or whiteboard organizers.Pair two opposing magnets for maximum hold, or one magnet against a steel surface for a grip that releases cleanly when needed. The 30-piece pack covers multiple builds at once or keeps a stock ready for future projects.Small-batch product designers and packaging prototypers use these to test magnetic flap closures in rigid gift boxes before committing to production tooling – the 10mm footprint fits neatly into a routed channel or folded flap pocket. Cabinet makers keep a stock on hand for recessed door catches and drawer stops where a round pocket is easier to route than a rectangular slot.Safety: magnets can pinch skin when snapping together – handle with care. Keep away from pacemakers and electronic devices. If swallowed, magnets can cause serious internal injury – keep away from children under 14.

• STRONG N48 HOLD – UP TO 5 LBS PULL: Each disc delivers up to 5 lbs – N48 grade sits above N35–N42 in most craft packs, giving firmer grip for enclosures, hidden closures, and panel attachment
• FITS STANDARD 10MM MAGNET SEATS: At exactly 10mm diameter and 3mm thick, these drop into 3D-printed enclosure and box-lid pockets – consistent fit across every piece, no filing or forcing required
• VERSATILE FOR CRAFTS, COSPLAY & DIY: Hidden closures in handmade bags and pouches, lightweight attachment for cosplay EVA foam panels, recessed cabinet catches in routed or printed pockets, fridge and whiteboard organizers
• 30-PIECE PACK, TRIPLE-LAYER NICKEL COATING: 30 N48 discs with NiCuNi plating – smooth finish, chip-resistant under repeated snap-together cycles, corrosion-resistant for workshop and craft use
• N48 OUTPERFORMS STANDARD CRAFT MAGNETS: Most small disc sets ship N35 or N42 – N48 rare earth performance in the same 3/8" footprint, consistent pull so closures and mounts behave the same every time