Strong Neodymium Cylinder Magnets 1/2 x 1/2 inch (12x12mm) N48, 16.7 lbs - Rare Earth Round Cylindrical Magnet for 3D Printing, Cosplay Armor & Woodworking Closures (6 Pack)

These N48 neodymium cylinder magnets are built for makers who need a magnet that drops into a 12mm pocket and stays there. At 1/2 x 1/2 inch — roughly the diameter of a pencil eraser and equally as tall — the cylindrical form fits a standard drilled hole or modeled recess without shimming; the magnet seats flush and holds with up to 16.7 lbs of pull force.N48 grade means roughly 14% more magnetic energy than N42 at identical dimensions. Through a 2–3mm shell of PLA or plywood, that difference is tangible: the closure snaps shut firmly under vibration, where a standard N42 of the same size begins to loosen. Each magnet carries a triple-layer nickel-copper-nickel coating — smooth, corrosion-resistant, and scratch-free in epoxy or friction-fit pockets. Magnetization is axial, so the strongest pull is through the flat circular faces, making these ideal for face-to-face closure pairings. Under normal conditions the magnetic field is permanent; neodymium magnets retain full strength for decades when kept below 176°F (80°C).Common deployments: embedded closures in 3D-printed enclosures and prop armor panels, concealed cabinet latches in handmade furniture and wooden boxes, magnetic clasps for bookbinding and craft box lids, panel connectors in escape room builds, and workshop tool-holder strips. The 6-pack supports multi-point closure systems — two or three opposing pairs distribute pull evenly across a larger panel joint, eliminating the torque that a single central magnet creates.Handling note: at N48 grade, two magnets snapping together from close range can chip the coating. Separate during storage; bring them together slowly and deliberately.SAFETY: Strong magnetic field — keep away from pacemakers and magnetic storage media. Magnets can pinch skin. If swallowed, serious internal injury may result — keep away from children under 14.

• N48 HIGH-GRADE STRENGTH – Delivers up to 16.7 lbs pull force — roughly 14% stronger than N42 — holding reliably through 3mm of plastic or wood where lower-grade cylinder magnets begin to slip
• PRECISION CYLINDER FIT – Uniform 12mm form drops into drilled holes and 3D-printed pockets; consistent tolerance ensures a snug friction-fit or epoxy seat in closures, fixtures, and embedded assemblies
• BUILT FOR MAKERS – Fits 3D-printed panel connectors, box lids, cosplay armor quick-release joints, concealed cabinet closures, tool-holder strips, whiteboard mounting, and multi-point DIY assembly systems
• TRIPLE-LAYER NiCuNi COATING – Nickel-copper-nickel plating resists corrosion and chipping; smooth surface seats flush in tight recesses; pack of 6 matched cylindrical magnets for multi-point closure systems
• N48 — NOT THE COMMODITY GRADE – Most 1/2-inch cylinder magnets ship in N35 or N42; this SKU delivers N48 energy density in the same footprint, maximizing grip per cubic inch for demanding assemblies