72-tooth ratcheting box end needs a minimal 5° to move fasteners vs. 30° for standard wrenches; Flush mounted reversing lever allows you to change direction without removing the wrench; Off-corner loading design on box end provides better grip and reduces fastener rounding; 15° offset offers increased clearance; Thin head and beam provide greater access in confined work areas; Size conveniently stamped on the head and 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