Industrial type quick coupler 1.High Quality 2. year quality warranty! 3.Widely used in ... mechanismConstruction:-Socket body: brass,steel,stainless steel-Backnut: brass,steel,stainless steel-Sleeve: brass,steel,stainless steel-Valve:steel-Spring:steel,stainless steel-Locking Balls:Steel,Stainless Steel-Seals:Buta-N/Nitrile ...