With four different interchangeable , 060 diameter fibers, the TRUGLO Tru-Bead Universal Sight is the ultimate tactical field tool, Perfect for all lighting conditions, the TRUGLO Tru-Bead Sight is CNC-machined to withstand even the harshest environments, Endorsed by Duck"s Unlimited, the TRUGLO Tru-Bead Sight is sure to please any shotgun owner, TRUGLO Tru-Bead Sight, Fits Shotguns, Multi-Colored Interchangeable Front Fiber Optics:, Green, Red, Yellow, Orange, SKU: FBTG949A