This 5-Piece Brass Quick Connect Coupler Set provides a fast and reliable connection solution for your pneumatic system. Featuring a standard 1/4 NPT female thread, these heavy-duty brass couplers ensure a secure, leak-proof seal for air compressors and tools, enhancing workflow efficiency in any workshop. Key Features & Benefits: Fast One-Handed Operation: The push-to-connect American plug-in design allows for instant connection and disconnection of air lines with one hand, saving time and improving productivity. Leak-Proof & Durable Construction: Made from high-quality brass with a nickel-plated finish and oil-resistant rubber seals. This combination ensures a reliable seal under pressure up to 150 PSI and resists corrosion and wear. Wide Compatibility: The 1/4 NPT (American Standard Tapered Pipe Thread) female interface is universally compatible with most air compressors, pneumatic tools (nail guns, spray guns, grinders), and workshop air systems. Practical 5-Piece Value Set: Includes five identical couplers, perfect for connecting multiple tools simultaneously or keeping essential spares on hand for your workshop or job site. Built for Industrial Use: Designed to withstand a working pressure range of 0-1.0 MPa (approx. 0-150 PSI), making it suitable for demanding environments like construction sites and auto shops. Technical Specifications: Quantity: 5 Pieces Thread Type: 1/4 NPT Female Material: Brass Body, Nickel-Plated / Oil-Resistant Rubber Seal Pressure Range: 0 - 1.0 MPa (Approx. 0 - 150 PSI) Applicable Medium: Compressed Air (Non-Corrosive Gas) Ideal For: Connecting Air Compressor Hoses Quick Tool Changes for Nail Guns, Spray Guns & Grinders Factory Pneumatic Lines & Automation Equipment Workshop, Garage, or DIY Projects