The Spectrum Industries 68106FMB IMC 2ft Height Radius Corner is used with two double work-surfaces that have equipment rack support, a mid-support leg usually is not necessary. When a radius corner is next to a double work-surface, an equipment rack or mid-support leg should be used to support the double work-surface. The Radius corner work-surface 3/8" hole drilled on each side for monitor arm mounting. With standard laminate or color combination of fusion maple/black.