This loose piece Flag Receptacle from the Ultra-Fast Fully Insulated series from FASTON is crafted from Brass and contains tin plated contacts made from copper alloy while the receptacle's housing is made from UL 94 V-2 rated Polyamide 6.6. The receptacle features a funnel entry leading into its crimp area to ensure easy entry of any wires ranging in size from 22-18 AWG.