TODO Dry Break Couplings offer industry leading valve technology to provide safe transfer of hazardous chemicals. TODO-Matics Couplings are operator friendly and can be engaged and locked with a simple rotation without external locks, levers or cam ears. Integral swivel eliminates hose fatigue and facilitates hose orientation. Available in stainless steel, brass, aluminium and Hastelloy. Sizes: 3/4-6″