The Twin features high mechanical flexibility and is made of quality materials:
The Twin's multistrand high purity Oxygen Free Copper (OFC) conductors provide clear and accurate signal transfer from low bass to high treble and its environmentally friendly, halogen free, HULLIFLEX ® 4 jacket provides excellent protection against external mechanical and chemical influences, thus ensuring a very long life.

The TWIN's two conductors furthermore have different insulator shapes: one is round and the other has two edges with type printing on the flat surface: the most simple polarity finder you can think of.