Male Torx Bit Sockets (Internal): These insert into star-shaped screw heads. Common sizes included are T10, T15, T20, T25, T27, T30, T40, T45, T50, and T55.
Female E-Torx Sockets (External): These fit over star-shaped bolt heads. Typical sizes range from E4 to E20.
Material: Most of these sets are manufactured from high-grade Chrome Vanadium Steel (Cr-V) for strength and resistance to corrosion.
Drive Systems: These sockets generally use 1/4" or 3/8" drive sizes to connect to standard ratchet wrenches