Marble’s® standard "Expert" shotgun beads are also available with fluorescent orange and green fiber optic cable. The cables are UV protected and permanently bonded to our machined from solid steel "Expert" bases. These brilliantly glowing beads will stand out in all light conditions and extend your shooting hours on heavily overcast days in the field. Bright enough to see clearly but unobtrusive enough to not alter the traditional look of your shotgun. Wingshooters, turkey hunters, and clay target enthusiasts will really be impressed with the light gathering qualities of the Marble’s® Fiber Optic "Expert" shotgun beads. >>"Expert" Sight Specifications