TAJIMA Plumb Bob Setter – 14 Oz (400G) Magnetic Plumb-Rite with 14.5 Ft Auto Recoil Cord & Quick-Stabilizing Bob – PZB-400GP. Manufacturer Tajima. Included Components Plumb Bob Setter, 14.5 ft Self-Retracting Line, Setting Pin for Wood/Drywall, Strong Magnet for Steel Surfaces, Hook for Nails or Studs.