In this toolset are 1/4″, 3/8″ and 1/2″ SAE sockets that range from 3/8″ all the way up to 1-1/4″. This set also includes shallow and deep-well sockets and crows feet. Sonic Sockets are made from Chrome Vanadium steel while socket bits are made hardened tool steel. Also included in this 121-piece set are SAE Hex bits from 3/16″ to 5/8″, and you get a 10-piece Hex-key set that includes sizes from 1/16″ to 3/8″.