KEY FEATURES Dead blow function eliminates bounce back when striking hardened surfaces Ergonomic handle is shaped and thickened for improved comfort and less vibration Vulcanized rubber handle provides a secure no-slip grip while striking Spark-resistant for safe use near combustible materials--no exposed metal on face, head, or shaft Unbreakable Handle Technology steel core eliminates breaking during overstrikes Lanyard hole allows user to safely secure hammer to wrist or stationary object