... Investment Casting+CNC Lathe ISO9001 CE Quick Coupling- adaptor, coupler, hose shank, dust cap, dust plug Type A Adaptor FemaleType B ... Dust CupType DP Dust Plug SPECIFICATIONS Quick coupling- adaptor, coupler, hose shank, dust cap, dust plug1. Size:1/2''- 6 ... Body: Stainless Steel; Gasket: Buna(NBR), Viton, Teflon;3. Application: For Oil, Petroleum, Chemical, Water, Gas and general chemical service;4. ...