The Rounded UltraHex Shaft is compatible with the REV ION System and allows teams to adapt the REV 5mm Hex Shaft family of products to 0.5in Hex applications. It can also be used as a coupler to extend 5mm Hex shafts. Rounded UltraHex Shaft is also a perfect for standoff and cross bracing. The 5mm Hex hole in the center of the extrusion can be tapped to accept either 1/4-20 or M6 screws, or it can be drilled and tapped for larger diameters when tension loading is required.