Material: High-quality wrenches are usually made of alloy steel, which has good wear resistance and torque resistance. Surface treatment: The surface of the wrench is chrome plated to prevent rust and improve durability. Anti-slip: The handle part of the wrench may be equipped with rubber to improve grip comfort and anti-slip. Usage: Select the appropriate size of the wrench, ensure that the wrench is closely matched with the bolt or nut, put the open part of the wrench on the bolt or nut, and turn the wrench to tighten or loosen the bolt or nut. Date First Available November 20, 2024