... steel wire ropes ofΦ12 or Φ16, no more than 40 meters long. The hollow anchors will be used for the rope ... ends, 2-3 meters long, made ofΦ16.Affiliate anchor (alternative): used in low ... area, similar with main anchor, but smaller, 1-1.5 meters long, 20-25mm in diameter.Bolts (alternative): made of steel ...