Where four rails meet in the same plane — a straight run crossed by a branch on each side — the Ball Cross ties all four together at one point. Four 2" OD tube ends seat into a single cast fitting with a decorative ball at the center, giving a flat four-way junction for a rail grid, a partition infill, or a crossed guard rail. Because the tube ends hide inside the ball, you cut the four straight pieces and let the fitting set the right angles — no fussy corner measurements. Choose polished brass, polished 304 stainless, or satin 304 stainless to match the run, and pair it with the matching elbows and tees in the same 2" ball line.