Tool kit contains three high quality and indestructible hammers with revolutionary design. Unbreakable® Handle Technology with steel core eliminates breaking during overstrikes. Ergonomic handle is shaped and thickened for improved comfort and less vibration. No-Slip Grip - vulcanized rubber handle for secure grip while striking. Lanyard hole safely secures hammer to wrist or stationary object. Dead blow function eliminates bounce back when striking hardened surfaces.