Ameriglo Tritium 2-Dot Rear Handgun Sight for Glock Yellow with White Front 1B83F3CD. Choose from a variety of heights notch widths and notch shapes.Yellow Tritium 2-Dot White Outlines .276" H .165" Sq NotchFits All Glock Models. Features of Ameriglo Tritium 2-Dot Rear Handgun Sight for Glock Yellow with White Front: Wide Range of Proven Rugged Illuminated Tritium Rear Night Sights Select Glock Springfield Armory Sig Sauer and Smith & Wesson Pistols Variety of Heights Notch Widths and Notch Shapes Yellow Tritium 2-Dot White Outlines Package Contents: Ameriglo Tritium 2-Dot Rear Handgun Sight for Glock Yellow with White Front Ameriglo GL-8115R: Tritium 2-Dot Rear Handgun Sight for Glock Yellow with White Front 1B83F3CD