Drop forged, heavy-duty Chrome Vanadium Steel, heat treated, providing greater strength and torque. Mirror finishing for increased durability and corrosion resistance. Hard stamped markings provide quick size identification. 10pcs Spline Sockets: 1/4" Drive: M4, M5, M6 3/8 Drive: M8, M9, M10, M12, M14 1/2 Drive: M16, M18 Accurate spline sizes ideal for dealing with star-shaped bolts. All the torx sockets packed in a sturdy case, and each position is marked.
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