SP2 Firefly Tritium MegaGlow Kit Markers (Extra Large Tritium) - Ice-Blue

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The new MegaGlow markers from SP2 utilise the largest trigalight light source in the market! MegaGlows are moulded in clear grade V0 polycarbonate, providing a tough protective enclosure and making them highly shock resistant. Stainless steel end-caps provide an attractive yet durable finish. This is the smooth finish option

The tritium inside these MegaGlows are bigger than the ones in both the kit marker & super kit marker versions


Firefly MegaGlow safety markers allow equipment and positions to be covertly marked during low-light and darkness. Incorporating the largest light source available, MegaGlows can be identified or located at distances of up to 40m without resorting to electric or chemical lights. Simple, reliable and effective, operational efficiency and safety are enhanced during darkness.



Length: 41.0mm


Overall Weight: 8.0g

Split-Ring Diameter: 35.0mm

Maximum Activity: 15.0 GBq



  • Uniquely reliable trigalight® light source
  • Uses the largest trigalight® GTLS available
  • Continuously illuminated for more than 10 years
  • No batteries, bulbs or switches
  • No charging by ambient light
  • Lightweight, compact and easy to use
  • Split-ring included for secure attachment
  • No heat signature
  • Reliable in all climatic conditions
  • Nine Colour options for function differentiation
  • “Smooth” finish option