Yetaha2 Pcs Reverse Osmosis RO Water System Fitting 3/8" Female Thread-1/4" OD Hose Plastic Pipe Quick Connectors B 3/8"(16mm) Female Thread-1/4"(6.4mm) OD Hose

Yetaha 2PCS Ro Water Filter Fitting, 3/8” BSP Fitting Female to 1/4” OD Pushfit Garden Hose Connectors, Reverse Osmosis RO Water System Fitting, Plastic Pipe Quick Connectors for Water Pipe

John Guest 3/4" BSP x 1/4" Push Fit Tap Adapter

CESFONJER RO Water Filter Fitting, 1/4" Pushfit Straight Connector for Water Pipe (Y+T+I+L Type Combo + Shut-Off Valve), 10 Metres of 1/4" / 6.3mm Diameter Tube