GearWrench MaxxLock hammers and sledges are built with durability in mind. The GearWrench Brass Sledge Hammer, MaxxLock 14", 2.5 lb. (69-717G) and other MaxxLock tools, feature head to handle locking system with epoxy and wedges that provide over 10,000 lbs. of pull-off resistance. The head is drop forged from alloy steel. The fiberglass core handle performs better than comparable steel rod handles without the added weight. The steel reinforced copper tether point also provides increased safety while working at heights.