72 tooth ratcheting box end needs a minimal 5 ° to move fasteners vs. 30 ° for standard wrenches Off-corner loading design on box end provides better grip and reduces fastener rounding Thin head and beam provide greater access in confined work areas Size conveniently stamped on both ends of the beam for quick identification Manufactured from alloy steel for better strength and longer tool life Bright, full polish chrome finish easily wipes clean and resists corrosion Meets or exceeds ASME and ANSI specifications