| 摘要 |
A tensile element spacer in the form of a dropper 10 comprises a rod like body 12 that is integrally formed with formations in the form of ribs 14 standing proud of the surface of the body 12. The ribs 14 are arranged in the form of rib sets 16 each of which is constituted from two ribs 14 that extent along opposite sides of the body 12 and in a direction transverse to its axis 18. A series of tensile element tying zones in the form of wire tying zones 20 are formed between the rib sets 16 along each of which a wire is securable by way of wire ties. |
