The spline sockets in this set are dual-sized, i.e. one size fits both metric and SAE. They fit the usual types of fasteners: 6-point, 12-point, square, spline, E-Torx, and partially rounded.
Crescent is a brand of Apex Tool Group. https://www.crescenttool.com
https://www.apextoolgroup.com
Post time: Jun-13-2017