Glowing bright both day and night, TFX sights are always ready. TFX takes our award-winning Tritium + Fiber-Optic technology even further with all the features- compact snag-free design, longer sight radius and durable construction built to handle just about anything. Illuminating elements are encased inside a virtually indestructible chemical and shock-resistant capsule and the CNC-machined steel is protected with a rust-resistant Fortress finish. Front sight FOCUSLOCK for fast and accurate shooting. Fits standard holsters. Fiber Diameter: 0.074. Front Sight Length: 1.0. Front Sight Width: 1.0. Front Sight Height: 1.0 Rear Sight Length: 1.0. Rear Sight Width: 1.0 Rear Sight Height: 1.0. Compatible w/Glock 42/43/43X/48 Except MOS.