These are CNC-cut aluminum boxes in popular sizes for projects of all types. Designed for magnet closure (magnets included while supplies last) with a thumbnail groove in the cover. Matte finishes, exact shades may vary slightly. Various sizes available in various anodized and raw finishes. Many of these sizes may be similar to certain popular Hammond box sizes. Quality generally A to B+.
Measurements are in mm within +/- 0.1mm or so.