1)Color jumper is the telephone lines serise. 2)It is used on the overhead. 3)Have different colors:red,blue,black,white COLOR JUMPERColor jumper is telehpone lines series,it is widely used.We can use it in our daily life.They have many colors,such as red,white,black,and blue.MaterialIts conductor material is copper,so its conductivity is can be very good.And its insulation material is PE,make ...