goBILDA is a complete, metric building system. Start using the first metric system to include lead screws, ball bearings, hinges, gears, linkages, linear motion, and more.
goBILDA is based on an 8mm grid with 14mm holes for bearings. These 14mm holes are circled by eight 4mm holes to allow for attaching parts at 45-degree increments. Below, you can see the 8mm grid in orange and the circular pattern in blue.