In refurbishment and renovation, existing rails rarely turn at tidy standard angles. This adjustable elbow joins two 1.67" OD (42.4mm) tubes and lets you set the join angle by hand to match what's already there, with a sharp-angled flush joint. That saves ordering a one-off custom bend when you need to meet original geometry on a deck, a balcony run, or an exterior rail. It's 316 stainless in polished or satin, built to shrug off salt air and wash-down, with a heavier.080" wall to the European rail size. It's the sharp-angled option — distinct from the Flush Adjustable Radius Elbow at the same OD, which gives a smooth curved bend instead; pick by the look you want. The OD won't interchange with the 1.5" or 2" adjustable versions.