When a corner isn't a clean 90° or 135° — common in renovation and restoration — this adjustable elbow lets you set the exact angle on-site rather than order a custom bend. It joins two 1.5" OD tubes with a sharp-angled flush joint, and the pivot holds whatever angle you dial in. That flexibility is worth having on jobs where the corner angle stays uncertain until the rail is being fitted. It's made in 316 stainless, polished or satin, so it stands up to coastal air, pools, and wash-down as well as looking right indoors. One important fit note: this fitting uses 1.5" OD.060" wall tubing, not the standard.050" wall the fixed elbows take — the thicker wall gives the adjustable joint its rigidity. It's a different bend type from the Flush Adjustable Radius Elbow, which curves smoothly; confirm which look you want before ordering.