HellFighter X-8 Kit: Includes 150 Lumen Light (Xenon), Flag Switch-6 inch, Gooseneck Mount Bright 150 Lumens (Xenon) Kit includes Flag Switch 6-inch and Gooseneck Mount Perfect for the AR Platform Length: 5.75 inches x 1.5 inches, Body Diameter: 1 inch, Weight: 6.5 ounces, Powered by (2) cr123 lithium batteries - included Lifetime Warranty (excludes bulbs and batteries)