Material: Steel bead body
Gunsmithing Required: Yes
Threads: 6x48 OverSize thread with major diameter of .146"
Length of shank: 3/32"
Notes: The Fiber Optic bead is bright enough to see clearly but unobtrusive
enough to not alter the traditional look of your shotgun. A great companion
with Marble's Fiber Optic Universal Rear Sight.