The Industrial Six Ball Quick Coupler, Brass, 1/4" NPT Male is a heavy-duty pneumatic fitting designed for reliable, leak-resistant connections in air compressor systems. Featuring a brass construction, it offers high corrosion resistance and a long service life, making it suitable for both professional and DIY applications. The 6-ball bearing design ensures a secure, tight seal with industrial-style (M-type or D-type compatible) plugs, providing greater holding power and durability compared to 3- or 4-ball models. These couplers are commonly used in automotive shops, job sites, and home garages for connecting air tools such as impact wrenches, nail guns, and blow guns. They feature 1/4" male National Pipe Thread (NPT) for standard compatibility with air hoses, manifolds, and compressors.