Introducing Koike's Oxy-Fuel Quick Connect Couplers, setting the industry standard for safety and performance with OSHA compliance and UL certification to ensure unparalleled safety. Designed to work with 9/16th type B fittings, the most common in the industry, these couplers eliminate any compatibility concerns, allowing for easy plug-and-play to your workspace. Their compact design prevents gas flow when disconnected, eliminating the need to turn off tanks, while the Anti-Reverse feature prevents cross-contamination of gases. Crafted with the highest quality Japanese materials, our couplers guarantee durability and longevity.