1.quick couper swivel connector, 2.revolving connector, 3.air couplers, 4.air accessory 5.Material: iron,brass,etc, quick coupler swivel connector,revolving connector,air couplers,air accessorymaterial:iron plate or brasssize:1/4",3/8"Contact:We will reply your email or fax within 24 hoursYou can call us at any time if there is any question on our production.Our hotline:0086-574-55011555 We can ...