Each Torx bit is forged from S2 alloy steel, while the E-Torx sockets are constructed from high-grade Cr-V steel, ensuring unparalleled strength and performance. Manufacturer Part Number: torx bit socket set Unit Quantity: 25 Tools Included: Sockets,Universal/Swivel,Torx bits,E-Torx sockets,Heavy-duty storage case Size: E4,E5,E6,E7,E8,E10,E12,E14,E16,E18,E20,E22,T8,T10,T15,T20,T25,T27,T30,T40,T45,T47,T50,T55,T60.