PinMart USA and China Crossed Friendship Flag Enamel Lapel Pin Available as a single item or bulk packed. Select your quantity above. 10 Pack of Lapel Pins USA and China Crossed Flag Lapel Pin. Sometimes referred to as a friendship flag. This pin features the American Flag and Chinese flag crossed in a symbolic and traditional method. SIZE: 1 1/8'' x 1/2'' Each pin comes with a clutch back and is individually poly bagged.