The better you can see your sights, the better you can shoot. We brought fiber-optics to the shooting sports industry decades ago for this very reason. TFO pairs our fiber-optic sights with our tritium night sights to create a consistently bright sight picture day or night. Snag resistant design, fits standard holsters. Fiber Diameter: 0.060. 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 20/21/25/29/30/31/32/37/40/41 Except MOS