PVC Elbow Reducing Pressure 90° / 50mm Internal to 40mm Internal PN16 / Pool and Watering : Amazon.co.uk: DIY & Tools
Amazon 1.5inch 2 Inch Small Swivel Rotating Pivoting 40mm PU PVC Casters Wheels for Air Cooler - China Industrial Caster, Swivel Plate | Made-in-China.com