Amazon.com: Marine Grade Heavy Duty 316 Stainless Steel Boat Hand Rail Railing Fitting(I.D. 26MM) Center Bracket Stanchion Mount Hardware for 1inch OD Tubing : Sports & Outdoors
High Quality Stainless Steel Handrail Fittings - China Pipe Fittings, Pipe Fitting | Made-in-China.com
SteelTek 1-1/4-in Structural Galvanized Rail Support in the Structural Pipe & Fittings department at Lowes.com