Ronstan's R2600 Foresail Fairlead/Bow eye Fitting is molded from black, Acetal resin to provide maximum resistance to wear. It has a 1/2 in. (13mm) aperture and measures 2 3/4 in. long x 1 1/8 in. high x 7/8 in. wide (70mm x 29mm x 48mm). Its two holes are spaced at 1 7/8 in. (48mm) on center.