TRUGLO TRITIUM X SIGHT SET: You count on your handgun to be reliable in any situation. Your sights should be held to the same standard - which is why TruGlo Tritium-X night sights are made from solid steel and treated with a nitride Fortress Finish to handle just about anything. Swiss Tritium lamps provide a bright and constant glow in low light or even complete darkness. Tritium does not need batteries and does not need to be charged with light - it simply glows! MAIN FEATURES:- 3-dot configuration;- Transitions from white dots to glowing tritium dots;- Unmatched visibility in all shooting conditions;- Smooth, snag-free design fits most standard holsters;- No batteries or light exposure required;- Compatible with Glock handgun models; ABOUT TRUGLO: TRUGLO is the leading manufacturer of fiber-optic sights, tritium handgun sights, and shooting accessories for crossbows, and handguns. We're a Texas company. Inherently, that means we like our guns, and slinging lead a long way. From target archery to tactical competition, TruGlo has accessories to improve your gear. Regardless of your outdoor sporting interest, we have gear that's optimized for your style and budget.