Merkava Isotope Fob with Tritium Vial

Rated 5.00 out of 5 based on 1 customer rating
(1 customer review)


Fob comes with a tritium vial with your choice of color.

Merkava Isotope Fob Specification:
• Material: Stainless Steel
• Finish: Bead Blasted
• Light Source: Tritium
• Outside Diameter: 5.0 mm [0.197″]
• Overall Length: 31.5 mm [1.24″]
• Split Ring Hole Size: 3.0mm [0.118″]
• Total Assembled Weight (without tritium vial): 1.8 grams [.06 oz]
• Total Assembled Weight (with tritium vial): 2.0 grams [.07 oz]

SKU: tritium04 Category:


The Merkava Isotope Fob is a keychain fob specifically designed to hold a standard 3mm x 23mm self-luminous tritium vial (included with your choice of color). Tritium vials come in a variety of colors, and will glow for many years without requiring any type of “charging” from sunlight or artificial light. Unlike our conventional line of glow fobs, the Isotope was designed around the use of a glass tritium vial. This makes it noticeably smaller than our standard glow fobs, and allows it to glow continuously without any type of charging cycle! The Isotope is a stainless steel housing, bead blasted to a uniform matte finish. There are 7 slots on each side of the housing as well as a hole in the bottom to provide maximum tritium visibility, yet offers superior protection of the glass vial. Once the tritium is installed, you simply insert the included rubber plug and attach the split ring. This prevents the tritium vial from sliding out, yet provides an easy way to exchange vials if you want a different color. Attach the Merkava Isotope Fob to your car keys or even a flashlight, so you can always find them when the lights go out. Attach it to your jacket as a zipper pull so your friends can locate you inside a movie theatre or outside at night! You can clip it to a backpack, camping gear, or even to the pull chain on a ceiling fan…the uses are endless!

1 review for Merkava Isotope Fob with Tritium Vial

  1. Rated 5 out of 5

    Skyler (verified owner)

    Ordered one of these as a gift, it shipped in about 2 weeks, looks great, and was super affordable compared to other places I looked, plus they had my friends favorite color which I couldn’t find anywhere else. I’m pretty freakin satisfied, and will likely order another for myself in the future.

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