HIGH-QUALITY ALLOY STEEL- This impact socket wrench set is made of extra solid alloy steel, resistant to abrasion and wear, this torque wrench has a sturdy construction that will not easily crack under high pressure for maximum strength and longevity. SUPERIOR PERFORMANCE- Whether you drive them with an impact wrench or by hand, these premium chrome vanadium sockets deliver superior performance. The deep impact socket set features a 6-point, high-torque design that contacts and grips the stronger flat sides of nut or bolt head, not the weaker corners. 17 SOCKETS INCLUDED- This effort-saving 3/4 inch drive impact socket set comes with 17 deep impact drive sockets: 13/16'', 7/8, 15/16, 1, 1-1/16, 1-1/8, 1-3/16, 1-1/4, 1-5/16, 1-3/8, 1-7/16, 1-1/2, 1-5/8, 1-3/4, 1-13/16, 1-7/8, 2