camlock dust cap coupling 1.Coupling material include Aluminium,brass,pp,stainless steel. 2.Size:1/2inch-8inch camlock dust cap coupling1.Coupling material: Aluminium (PP, brass, stainless steel are all avaiable)2.Type: A B C D E F DP DC3.Coupling Size: From 1/2" to 8"The groove cam lock coupling are used for lay flat hose, fire hose and others. camlock dust cap coupling