If you travel a lot and are concerned about the airport metal scans, you might want to replace your wires with these plastic ones. They are also great for those with metal sensitivities. These are symmetrical and can be cut to any length easily with a utlity knife and the sharp edges rounded off with an emery board
32 - 30C, 32B and 34A, AA, AAA
34 - 28E, 30D, 32C, 34B, 36A, 36AA &36AAA
36 - 30E,32D,34C,32D,30E,32DD,38A,38AA,38AAA
38 - 38B, 36C, 34D, 32E, 30F, 28G and 40A
40 - 40B, 38C, 36D, 34E, 32F, 30G, 28H
42 - 42B, 40C, 38D, 36E, 34F, 32G, 30H
44 - 44B, 42C, 40D, 38E, 36F, 34G, 32H