The bright and ultra-durable HiViz LiteWave sight will enhance your confidence and shooting experience for the Ruger P-Series and SP101 Revolver. It features an all steel frame and interchangeable LitePipes. Factory height front sight compatible with factory rear sight. Blade Width: 0.125". Blade Height: 0.135" LitePipe Diameter: 0.090". Litepipe Handgun version #5. It will not fit P345 and SP101 chambered for 327 Fed. Pinned sights must be drilled for the pin, we recommend Gunsmith installation. Front Sight Length: 0.750". Front Sight Width: 0.122". Front Sight Height: 0.268".