TRUGLO Tritium-X 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. 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 17/17L/19/19X/22/23/24/26/27/33/34/35/39/45 Except MOS