RWO's Large Bridge Fairlead is made out of hard-wearing, black Acetal resin and has rounded edges to minimize friction and line abrasion while redirecting line. It has a 3/8 in. (9mm) aperture and measures 11/16 in. high x 1 3/8 in. long x 1/2 in. wide (18mm x 35mm x 13mm).