Product DescriptionXS Sights Standard Dot Night Sight is built for rapid sight acquisition and low-light confidence on defensive revolvers. A self-illuminated tritium vial is surrounded by XS&';s proprietary photoluminescent Glow Dot in white, creating a large, high-contrast aiming point that&';s easy to pick up in daylight and glows in dim conditions. The convex dot increases surface area to absorb ambient light for a brighter charge. Designed for straightforward, doityourself installation and reliable performance, it&';s a smart upgrade for your Taurus 856.Product Highlights Selfilluminated tritium vial glows 24/7-no batteries required Highvisibility white Glow Dot for fast daytime sight acquisition Convex dot design increases light absorption for a brighter glow in low light Easy DIY installation with durable steel construction Compatible with Taurus 856 revolvers Specs Product Type: Tritium night sight Dot/Color: Standard Dot, White Glow Dot Compatibility: Taurus 856 Model: Standard Dot Dimensions (L x W x H): 8.25 x 5.00 x 1.25 inches (package) Weight: 0.13 lb (approximate, package) UPC: 647533001878 MPN: TS-0003N-4 Brand: XS Sights Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer.