Outfit your Sure-Loc scope with a super bright aiming dot for low light conditions - Kit includes fibers, attachment hardware - Use with sheath or cut into a straight fiber - Sold in 3 fiber packages (blue not available in .039). Additional fiber packages sold separately - Pin sizes: 29mm, 35mm, 42mm - Fiber sizes: .010, .019, .029, .039 - Colors: red, yellow, green, blue(not available in .039), or mixed