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TEC-T323-2X Isotope PRE (Picatinny Rail Edition)

$41.95 Regular price
Unit price

$3 Shipping on all Domestic orders

FREE International Shipping on Orders Over $150

IMPORTANT NOTE: This product DOES NOT include tritium vials. Please refer to our Tritium Primer to learn more about tritium and where to purchase it.

The TEC-T323-2X Isotope Fob is designed around the use of two glass tritium vials (not included), which will glow continuously for many years without the need to charge it from sunlight or UV light. Designated as the PRE model (Picatinny Rail Edition), it takes our original Isotope design to the next level.

With a visual appeal rooted in the military standard rail interface system, this Isotope accepts TWO standard 3mm x 23mm tritium vials for twice the brightness and twice the color! Eight large thru holes allow for maximum tritium visibility, while the virtually indestructible grade 5 titanium housing offers superior protection for the two glass vials. 

Due to the simple yet secure retention method, you can change out the vials anytime you like to achieve different glow colors. Match your favorite sports team, school colors, or to help identify the contents of what you attach it to. 

Complete your EDC collection with the functional and stylish Isotope PRE, which provides just the right amount of light for locating items in the dark. Perfect for attaching it to your keychain, camping gear, zipper pulls on gear bags or jackets, or try it on the pull chain on your ceiling fan. Where will you clip yours?

TEC-T323-2X Isotope PRE Fob Features:

  • Custom designed to hold two standard 3mm x23mm tritium vials (sometimes specified as 3mm x 22.5mm)
  • Bead blasted, uniform matte finish
  • Manufactured from 6Al-4V (grade 5) titanium

What you get:

  • (1) TEC-T323-2X Isotope PRE Fob
  • (3) Rubber plugs for tritium vial containment (1 required plus 2 spares)
  • (1) 11.1 mm [7/16"] diameter split ring for attachment to other items
  • Important Note: Product DOES NOT include tritium vial

    The TEC-T323-2X Isotope PRE Fob is a titanium metal housing suitable for mounting two 3mm x 23mm glass tritium vials. It is bead blasted to a uniform matte finish.

    • Material: 6Al-4V (Grade 5) Titanium
    • Outside Diameter (widest side): 7.0 mm [0.275"]
    • Overall Length: 54.0 mm [2.216"]
    • Split Ring Hole Size: 3.0mm [0.118"]
    • Total Assembled Weight (without tritium vials): 4.5 grams [.16 oz]
    • Total Assembled Weight (with tritium vials): 4.9 grams [.17 oz]
    • Important Note: Product does not include tritium vials


    The TEC Isotope Fob Series are keychain fobs specifically designed to mount standard 3mm x 23mm and/or 3mm x 11mm self-luminous tritium vials. They do not include tritium vials, you must purchase them from another source typically outside the United States.

    Learn more about what tritium is and where to buy it by clicking here.


    TEC Accessories offers a 30 day no-questions-asked return policy on all of our products. If you are not satisfied with your purchase, for any reason, contact us to arrange a return/refund. In addition, all products carry a 90 day warranty against defects in materials or workmanship. Please contact us if you have any problem with your purchase that requires attention, and we will promptly make any necessary corrections.

    Shipping Times

    PLEASE NOTE: Due to the current logistics delays, shipping times may take longer than expected. This is especially true for International shipments, where delivery times can take weeks longer than usual. This is beyond our control, and we ask that you please be patient with expected deliveries until shipping companies get back to a more "normal" schedule.

    We make every effort to process orders within one working day, however there may be slight delays depending upon the number of orders we receive, holiday periods and available staffing resources. Typically we will process all orders within no more than 2 working days.

    Shipping times (from the time the package is dropped off at the carrier) will vary depending upon the carrier, method of shipment and destination. For example USPS Domestic First Class Mail should take between 2-3 days, but we have seen instances of 5-7 days. Domestic Priority Mail should take 1-2 days, but can take anywhere from 1-4 days. Domestic Express Mail should take one day, but that is only if your processed order is delivered to the post office before the cutoff time (typically 12:00 noon). Also keep in mind that weather and travel distance can have an effect on delivery times.

    International shipments have even more variables that must be considered. A package sent by USPS First Class International can take anywhere from 1-3 weeks, sometimes longer depending upon the country. International shipments have the potential of being delayed by Customs, as well as having additional taxes or fees levied on a package. These are out of our control, and we advise that you become familiar with your specific country's shipping regulations to understand the impact to your shipment.

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