TOP Kogyo Single Box-End Wrench with Spud Handle 21mm SM-21

• Ideal for heavy-duty work such as steel frames and bridges • Excellent durability and strong enough for final tightening [Caution] • Use the size that matches the across-flats width of the bolt or nut. • Do not engage the bolt or nut only partially or at an angle. • Do not extend the handle with a pipe or similar. • Do not use as a hammer. • Do not use the tool for any purpose other than its intended use.