The highly elastic spring steel is nickel-free with nylon coated. The thickened ends ( prevents piercing the tunneling ) are marked on one side with a whit tip and on the other side , depending on size , colored .
The side with the colored , size-dependent Tip is is located under the arm .
All Wire are Galbline wires, dimension 2,5mm.
Shape and size overview in scale can be found here:
Bra Wire Style Sheet 7
More information related to this brawire you will find here:
Detailed information about the brawire series.