Designed by a World Champion for the equal balance of accuracy & speed in Practical Shooting. The wider/deeper rear notch & fiber optic front sight makes them desirable for high speed shooting. Vogel Dynamics World Champion Sights. Compatible with Glock Pistols Front & Rear Sight Set, comes with red fiber optic, and screw. Front: .220 tall, .117 wide / Rear: .250 tall, .150 wide, .130 deep / Fiber Optic Rod Size: .040 Compatible with ALL Glock pistols.