32MM Stainless Steel Pipe Airing Accessories Single Rod Round Pipe Rack Joint Pipe Fittings Connector Fixed Parts Landing - AliExpress
Prefdo 2-way Straight Pipe Fitting Connectors, 2PCS 316 Stainless Steel Cast Hand Rail Tube Connectors, Heavy Duty Nipples Connector Spare Part for Boat Yacht DIY project (1-1/4 Inch/32mm) - Amazon.com
E00791 Pivotable Stainless Steel Pivotable Connector for 1/2" Bar w/ Set Screws for Square Tube. External diameter 7/8". This INOX Stainless Steel Connector has a pivotable connector and features a 0.01" hole