*Open or closed wound
*Zero to high pre tension
*Conical, parallel or barrel
*0.2 - 7mm diameter of wire
*Open or closed ended
*Conical, parallel or barrel
*Constant or variable pitch
*Ground or Unground
*0.25 - 7mm diameter of wire
*Open or closed wound
*Conical or parallel
*Double Torsion
*Bulk supply of multiple bends