The Astro Tool 78313 13-Piece 1/4" & 3/8" Drive External Torx Nano Impact Socket Set contains low profile E-Torx sockets in 1/4" drive E4-E8 and 3/8" drive E10-E24. All sockets in this set feature an outside hex for extreme low-profile access from the side with a wrench. In addition, they are forged CRO-MO and have a lifetime warranty.