Selden Cam Cleat 38 is made of carbon fibre-reinforced polyethermide, which resists heat friction. It is designed to handle rope diameters of 5/32 in. (4mm) to 15/32 in. (12mm). Its hole spacing measures 1 1/2 in. (38mm) on center. The large cam cleat has a safe working load of 264 pounds (90 kg). Selden also makes the same size aluminum cam cleat (SLD43330101R).