The ArcFlat Magnetic 1-2-3 Block is a precision-ground, hardened steel block built for accurate setup and reliable positioning in machining, inspection, and fabrication tasks. Sized at 1" x 2" x 3", it features tightly held tolerances and strong embedded magnets for quick, clamp-free fixturing on ferrous surfaces. Made from heat-treated tool steel, this block offers durability and repeatability in demanding shop environments. Multiple threaded holes provide options for mounting or integrating into custom setups. Highlights: Precision Ground Surfaces: Squareness and parallelism held within ±0.0002" for high-accuracy setups. Strong Magnetic Hold: Embedded magnets grip securely to steel surfaces—no need for extra clamps. Hardened Tool Steel: Heat-treated for wear resistance and long service life. Threaded Mounting Holes: Allows for bolting, clamping, or attaching accessories. Versatile Use: Suitable for CNC workholding, layout, inspection, grinding, and more. Explore More: For full specifications or to browse complementary tools, visit the ArcFlat product page. Build better, faster, and more accurate setups with tools designed for real-world metalwork.