When your design calls for a magnet that disappears into the work — flush in a 3D-printed cavity, hidden inside a cabinet door, seated in a jig — the fit has to be exact. These 8mm × 8mm N48 neodymium cylinder magnets are sized to press-fit a standard 8mm (5/16 in) bore with a snug, rattle-free seat. No oversized flange, no step — just a clean cylindrical magnet that sits level with the surface.
Made from NdFeB rare earth material and finished with triple-layer Ni-Cu-Ni plating, each magnet holds its magnetic strength permanently and resists corrosion through years of shop use. The smooth nickel surface won't score a drilled hole on insertion, and the hard coating survives repeated removal cycles without flaking. At 8mm across, each magnet is roughly the diameter of a pencil eraser — compact enough for tight assemblies, substantial enough to grip through 4–6mm of wood or printed PLA.
Woodworkers use these to create invisible door stops, drawer catches, and box lid latches — drill the hole, drop in the magnet with a dab of CA glue, and the closure disappears. Makers embed pairs in 3D-printed enclosures for tool-free snap assembly or quick-release panels. Workshop organizers mount them in drilled bench blocks to hold steel rules and calipers in place. The 10-pack gives enough magnets for five matched pairs in a single project.
Wondering if N48 is meaningfully stronger than a standard magnet? At this diameter, N48 adds roughly 15% more pull over N42 in the same footprint — enough to hold through a coat of finish or a thin plywood skin where a weaker grade would slip. All 10 share axial magnetization (poles on flat faces) and consistent dimensions within ±0.1mm, so paired holes align predictably.
Safety: these magnets can snap together with enough force to pinch skin. Handle with care, keep away from pacemakers and implanted medical devices, and keep out of reach of children under 14.