Description Includes:1/4, 5/15, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16,7/8, and 1". 72 gear teeth , requires 5 degree sweep. Triple chrome-plated finish. This item is a suitable alternative for the following: 975-W30641, 17354