Surface Drive Technology virtually eliminates the rounding of fasteners
Made from Chrome Molybdenum Alloy steel (Cr-Mo) for exceptional strength and durability
High-visibility laser etched markings for quick size identifications
Secondary Hard size stamping
Parallel neck down design on 8, 9, 10, 11mm standard and deep and 5/16�, 3/8�, and 7/16� standard and deep sizes for improved access to restricted fasteners
