Chrome vanadium, heat treated alloy steel. Vinyl case for storage. Available for individual purchase. Laser engraved for quick identification. Made in the U.S.A. This 10 piece set includes sizes: 1/4 drive: E-5, E-6, E7 and E8; 3/8 drive: E-10, E-12, E-14, E-16, E-18, E-20.
