4 lb. Sledge Hammer. Touted as the "World's Strongest Hammer", this premium handle comes with patented indestructable technology, indestructable handle comes with spring steel bars to ensure that the head never gets dislodged from the handle, vulcanized rubber handle absorbs impact and vibration, reducing user fatigue, protects user in the event of striking an electrical wire, tested for 36,000 strikes both direct and overstrikes at a strike rate of 80 blows/minute wtih no deformation, drop forged head with induction hardened (50-55 HRC) strinking ends, trademark Estwing blue color head with head size and length identifier, includes steel reinforced lanyard hole, head weight 4 lb, overall length 16"