Built for professionals and hobbyists: 6-piece pneumatic coupler set designed for technicians, auto repair shops, hobby mechanics, and anyone who relies on compressed-air tools. Durable brass construction: made of brass for corrosion resistance and long service life. Resists rust to maintain reliable seals and connections over time. Standard interface for easy installation: fits standard pneumatic fittings to ensure a straightforward, tool-free installation and reliable mating with existing hoses and tools. Fast, secure tool changes: quick-connect design lets you swap air tools rapidly, reducing downtime and improving workflow on the job. Broad compatibility: works with a wide range of pneumatic equipment, helping you connect impact wrenches, air ratchets, blow guns, spray guns, nailers, and other air-driven tools without adapters in most setups. Reliable performance in demanding conditions: built to hold secure connections under regular shop and field use, helping maintain consistent air pressure delivery to your tools. Typical applications Automotive repair: swap between impact wrenches, air ratchets, and blow guns during brake, suspension, and tire work with fast, leak-free connections. Workshop and maintenance: streamline tool changes for assembly, fabrication, and general maintenance where multiple air tools are used. Home garage and hobby projects: improve efficiency for carpentry, metalworking, and DIY repairs that use nailers, spray guns, or air-powered hand tools. What you get Six brass couplers with standard quick-connect fittings that integrate with common pneumatic systems to simplify connections and keep your toolkit ready for regular shop or field tasks.