N48-grade neodymium disc magnets at 1/2 inch diameter by 1/4 inch thick (12.5 x 6 mm) deliver meaningfully higher flux density than the commodity N35 baseline ? the grade gap translates directly into holding power you can feel the moment these attach to a steel surface. The 1/2 × 1/4 inch format is one of the most practical disc sizes available: large enough to handle with bare fingers, small enough to recess flush into wood, acrylic, or a 3D-printed part. A pack of 10 gives you enough pieces to equip a full project without hunting for replacements mid-build.
These magnets seat cleanly in a routed pocket or an epoxied recess and hold a cabinet lid or box shut without visible hardware. Woodworkers use this format in jigs and alignment fixtures where a repeatable, tool-free release point is needed. In a workshop or garage, the same piece works as a wall-mounted tool holder anchor or a steel-surface parts tray fastener. The 1/2-inch diameter is also the right footprint for magnetic knife strips and drawer latches where a larger disc would be visible and a smaller one wouldnt hold reliably.
For craft and maker builds, the 1/4-inch thickness gives enough body to handle and press-fit cleanly into 3D-printed magnet pockets. Cosplay builders use this size in quick-release panel joints and prop attachments; the flat disc format spreads clamping force evenly across fabric or foam. Miniature modelers and scrapbookers reach for it when a secure, invisible closure is needed in the finished piece.
The triple-layer nickel-copper-nickel finish resists corrosion and leaves a smooth surface that wont scratch a fridge door or whiteboard frame. Neodymium is brittle ? avoid high-speed snap contact, which can chip the coating or crack the body. Keep away from pacemakers and implanted devices. Not for children under 14.