Amazon.com: 90° T Tee Tube Pipe Connector,AICWIOO Hinged/Split 316 Stainless Steel Boat Marine Handrail Fitting Spare Part For 1 Inch/25mm Tube : Sports & Outdoors
The Plumber's Choice 1-1/4 in. Hinged Split Ring Pipe Hanger, Malleable Iron Clamp with 3/8 in. Rod Fitting, for Suspending Tubing (5-Pack) 114HSHB-5 - The Home Depot
Stainless Steel 25mm 1" Pipe Clamp with Bolt Boat Top Hinge Marine Hardware Fittings Boat Top Jaw Slide Rowing Boats Accessories - AliExpress