Fire hose coupling.

Machino coupling: Japanese type 1-1/2", 2", 2-1/2", 3" Nakajima coupling: Shipyard use 1-1/2", 2", 2-1/2" John Morris coupling: Bic couplings 1-1/2", 2", 2-1/2" Storz coupling: Germany system 1-1/2", 2", 2-1/2" Expansion type coupling: pin or rocker lug. 1-1/2", 2", 2-1/2 Features: Good quality. Fair price. On time delivery. Durable. Variety choice.