Truglo created the original TFOA(R) day / night sight then made it virtually indestructible with Truglo's hermetically-sealed TFX(TM) sights. Now they are taking TFX(TM) technology to the next level for professionals and shooters who demand maximum performance from their handguns - providing ultimate reliability accuracy and brightness no matter how tough things get. Contrasting Orange FOCUS LOCK front sight ring for even faster focus Quick and accurate U-notch Design (Adjustable) rear sight Made of black non-reflective steel Angled rear sight edge for emergency one-hand operation All features of Truglo popular TFX Handgun sights TFO Technology provides 24-hour visibility - no batteries required