The King Tony SY-411H 1/2″ hose european air quick coupler is part of King Tony’s European series of pneumatic connectors, engineered for high-efficiency airflow. Designed for effortless one-handed connection and disconnection, it eliminates the need for additional tools. European-style couplers typically handle working pressures up to 145–150 PSI, making them suitable for demanding environments. Built for heavy-duty use, this coupler resists rust and corrosion while maintaining consistent performance. Its larger European profile (NW 7.2 mm) provides higher airflow compared to other types, reducing pressure loss and ensuring optimal tool power.
TECHNICAL DETAILS:
| Specification | Details |
| Brand | King Tony |
| Model | SY-411H |
| Size | 1/2 inch |
| Type | European |
| Type of Product | Air Quick Coupler |
| Weight | 26 g |
| Working Pressure | Up to 145–150 PSI (typical for European couplers) |
| Airflow Profile | NW 7.2 mm (high airflow, reduced pressure loss) |
| Connection Style | Quick connect/disconnect, one-handed operation |
| Material | Heavy-duty construction, corrosion-resistant metals |
| Application | Pneumatic connectors, air hoses, compressors, automotive and industrial tools |







