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MERLIN 1/4 in. Female Steel Automotive Coupler The MERLIN 1/4 in. Female Steel Automotive Coupler delivers reliable pneumatic connections for air tool systems and compressor applications. Engineered with durable steel construction, this coupler withstands high-pressure environments while maintaining a secure, leak-free seal. The female design accommodates standard 1/4 in. male plugs, making it compatible with most automotive air systems. Quick-connect functionality enables fast tool changes without interrupting workflow. Ideal for professional mechanics and serious DIY enthusiasts who demand dependable performance and longevity from their pneumatic equipment.