The Astro Pneumatic Tool 78866 6 Point Axle NutSocket 8 Pieces Set includes seven 6-point axle nut sockets and one 12-pointaxle nut socket (39mm). This set is designed with an extra deep precisionbroached and is forged from Cr-Mo with a lasting finish. The 39mm size is12-point in design for 39mm applications which have 12point nuts (Toyota/Lexus).