This 0421 Socket Combination Toolkit (40 Pcs) has a satin chrome finish that resists corrosion. It is ideal for routine jobs including DIY, automotive, plumbing, mechanical, and engineering work. For maintenance on automobiles, mechanical equipment, motorcycles, etc., this 0421 Socket Combination Toolkit (40 Pcs) may be used to tighten or loosen the majority of bolts, nuts, and screws. You may use more torque while dealing with harder fasteners on equipment, furniture, automobiles, machinery, and electrical gadgets with the help of this complete set.