Deli Plum Blossom Dual-Use Wrench Set 12+1 Plastic Frame Multifunctional Labor-Saving Quick Auto Repair Mechanical Maintenance Tool Set

High Carbon Steel (45# carbon steel), forged with high-temperature quenching for enhanced hardness and toughness

Plastic holder made of PP (Polypropylene)

Up to 45 HRC (46.7 HRC measured)

High strength, wear-resistant, and corrosion-resistant due to high carbon steel forging and quenching process

Four-layer nickel-nickel-nickel-chromium quadruple plating for superior rust protection in humid environments

Open-end torque up to 298 N·m

Box-end torque up to 522 N·m

Meets or exceeds standard torque values (open-end 149 N·m, box-end 261 N·m)

Durable and precise manufacturing ensuring long service life