M8 8mm MALE TO M6 6mm Female Threaded Reducers (Four) – Mnpctech
4mm 6mm 8mm 10mm 12mm Od Hose Barb X M8 M10 M12 M14 M16 M18 Metric Male Thread Brass Pipe Fitting Connector Adapter Splicer - Pipe Fittings - AliExpress
Adapter - 8mm Female to 6mm Male - F8-M6 - (Adaptor) - SA Sports - Outdoor Gear
Adapter - 8mm Female to 6mm Male - F8-M6 - (Adaptor) - SA Sports - Outdoor Gear
Water Adapter Quick Connector 6mm/8mm/10mm Accessories Female&male Fitting Gas | eBay
uxcell 5X Air Pneumatic Tee Adapters 8mm to 6mm One Touch Fittings Connectors: Industrial Air Cylinder Accessories: Amazon.com: Tools & Home Improvement
Adapter - 6mm Female to 8mm Male - F6-M8 - (Adaptor) - SA Sports - Outdoor Gear
Water Adapter Quick Connector 6mm/8mm/10mm Accessories Female&male Fitting Gas | eBay