Routing Eye Bolt Without Shoulder, 1/2"-13, 4 in Shank, 1 in ID, Steel, Zinc Plated 1/2 in, Shank Length 4 in, Eye Inside Dia. Routing Eye Bolt, System of Measurement Inch, Eyebolt Type Turned Wire, Material Steel, Finish Zinc-Plated, Thread Size 1/2 In.-13, Thread Length 2 1/2 in, Shank Dia..