Magswitch MagTether 300 – 8100111

With Magswitch MagTether 300, tether your equipment or yourself while working above and below water. Turn the lever 180-degrees to switch On/Off 240 pounds of magnetic hold force. Tether is sealed with a marine grade corrosion resistant coating to hold up to saltwater. Ideal for underwater welding, tethering, military and commercial oil and gas applications.


  • Pipe notch for lifting round
  • Outperforms other magnetic lifters on Thin Steel.
  • Superior performance in the presence of Air Gaps: uneven surfaces.
  • Lighter weight more compact unit
  • Stays clean – when off, debris falls off
  • Safe Tethering to work place
  • Tethering for equipment drop
  • Alongside and below the surface mooring
  • Extra hand as a fixture tool
  • Fixture base for monitoring equipment
SKU: 8100111.
Category: .


  • Max Breakaway: 247 lbs / 112 kg
  • Full Saturation Thickness: 3/16” / 4.75 mm
  • Product Weight: 2.2 lbs / 1 kg
  • Dimensions: 6.5 x 4.9 x 4.2 in / 165.1 x 124.4 x 106.6 mm
  • Magnetic Pole Footprint: 78 mm x 51.5 mm

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Check out one shipyard application of the MagTether in Korea here!

The Magswitch MagTether is also available in 600 and 1000