Indestructible Handle is made with Spring Steel Bars that run all the way through the handle. Bars are locked with the Hammer Head using Steel Locking Plates ensuring that the head never gets dislodged. Ergonomic Rubber Grip Handle absorbs shock & vibration reducing fatigue Special bonding process ensures that head never gets loose from the handle. Hammer Head is forged from 99.9% pure Copper for Spark free use. Copper Head resists sparking & reduces marring of most struck surfaces.