TEC Accessories Isotope Triode Fob 1.5" overall. These Pocket Knives from the professionals at TEC Accessories are meant using leading edge blade components that will retain an edge for very long periods of time before requiring consideration. The handle on the TEC Accessories Isotope Triode Fob has been invented to present you with the ultimate grip in virtually any situation. Here at OpticsPlanet it is our goal to ensure that you leave satisfied and the TEC Accessories Isotope Triode Fob is among the list of folding pocket knives that we are proud to be able to provide our clientele. For an amazing way to make sure you are cutting with some of the finest knives available go with the TEC Accessories Isotope Triode Fob. Features of TEC Accessories Isotope Triode Fob 1.5" overall. Suitable for mounting mulitple glass tritium vials (tritium vials are not included). Each bore can hold (1) 3mm x 23mm vials or (2) 3mm x 1mm vials. 0.472" outside diameter. Comes with (5) rubber plugs for vial containment (2) O-rings and (2) split rings for attachment. Bulk packed. Package Contents: TEC Accessories Isotope Triode Fob TEC Accessories TEC-T3-6X: Isotope Triode Fob 1.5" overall