Key features - High strength materials: Full polish ratcheting is made of chrome vanadium steel for excellent durability. The finish provides corrosion resistance. The 72-tooth mechanism with a 5-degree swing enables a firm grip on nuts and bolts and fast, smooth rotation with a small arc. - Torque specifications: Proof torque for 1/4 inch drive is 82.8 N·m (650 in-lb). Proof torque for 1/2 inch drive is 379.9 N·m (3363 in-lb). Use within these limits to ensure reliability. - 3-in-1 design: The ratchet handle supports 1/4, 3/8, and 1/2 inch drives, reducing the number of tools needed and keeping your toolbox lighter. - Safety and care: Before use, refer to the Maximum Torque specification for each wrench and do not exceed it to avoid damaging the ratchet. - Gift idea: A practical gift for Father’s Day, Christmas, birthday, anniversary, Valentine’s Day, and more. Use scenarios - Automotive maintenance: Tighten or loosen fasteners on engines, suspensions, and other components using the appropriate drive size (1/2" for high torque or 1/4" for smaller fasteners). - Bicycle or motorcycle repair: Perform quick adjustments or component replacements with 1/4" or 3/8" drives for ease and efficiency. - Home projects and furniture assembly: Assemble equipment and furniture with small to medium bolts using the 1/4" or 3/8" drives for versatile, compact operation.