KFI Double Lock Series Couplings are durable quick-release connectors designed for reliable air and fluid transfer in industrial applications. Featuring a secure locking mechanism and corrosion-resistant build, they ensure safe, leak-free performance. Ideal for pneumatic tools, compressors, and workshop environments. Materials Available In AISI 304 AISI 316 AISI 304L AISI 316 L Brass Carbon Steel Key Features Designed with a unisex configuration for universal use. Features a spring-loaded interlocking mechanism for secure engagement. Coated with a corrosion-resistant finish for extended longevity. Smooth interior diameter ensures an unobstructed flow path to the tool. Optional locking key available to prevent unintentional sleeve retraction.