Tralier air brake coils
Size: 12*10, 12*1.5, 1/2"
Dimension: 16 turns, 18 turns, 20 turns, 22 turns, 24 turns, 26 turns, 28 turns
Working length: 4.5 meter, 6.5 meter, 12ft, 15ft, 20ft......
Connector; M16, M18, M22, 1/2"
Color: blue, red, yellow, black