Cres ams5355 17-4ph; 1.100 in. Lg; 1.040 in. Min 1.060 in. Max arm lg from hub center; one end bore serrated 23 teeth, 45 degrees pressure angle, 0.3813 in. Major dia, 0.490 in. Lg; other end serrated 22 teeth, 45 degrees pressure angle, 0.5850 in. Major dia, 0.460 in. Lg