This meticulously crafted front bead is made from genuine Mammoth ivory to give a fine shotgun the look of traditional elephant ivory, without violating international trade restrictions. Practical, too, because it gives a clean, easy-to-see, glare-free, white dot in all light conditions. Mfg: Necg SPECS: Turned Mammoth ivory, natural finish. .157" (4mm) dia. bead. Undersized 6-48 thread, secure with epoxy adhesive.