LiteWave H3A(R) sight combines Tritium with the HIVIZ Litepipe technology for 24 illumination. Now you can have the advantage of day and night performance all in one sight system. All steel construction sight sets are rugged and durable, designed for the roughest use, whether it is personal defense and protection, Law Enforcement or Military.The new LiteWave H3A(R) ensures fast sight acquisition and a bright sight picture day or night. Features: Fit Details: Fits most vent-ribbed shotguns with removable front bead. Sight includes five screws in varying thread sizes to fit nearly any shotgun: 3-56/2.5mm x .45mm; 5-40; 6-48; 3mm x .5; 3mm x .6.