GEARWRENCH 44 Piece 3/8" Drive 6 PointSAE/Metric Std./Deep Impact KD84916N 44 Pc 3/8" Drive 6 point SAE and Metric, standard and deep impact socket master set Includes: Standard SAE Impact Sockets from 5/16" to 3/4" and metric from 8mm - 19mm Includes: Deep SAE impact sockets from 5/16" to 3/4" and metric from 8mm to 21mm Includes 3" and 6" 3/8" Drive impact extensions Includes 3/8" Drive Impact Universal Joint Made from Chrome Molybdenum Alloy Steel (CR-MO) for exceptional strength and durability Surface Drive Technology for reduced fastener rounding Manganese Phosphate coating for corrosion resistance 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 High-Visibility laser etched markings for quick size identification Secondary Hard Stamping Includes Blow Mold Case with reinforced steel hinges and steel buckles for strength and security