Isocore, 3 LB, Wedged Demolition Head Club Hammer, Concentrates Force For Up To 5X More Destructive Power Than Traditional Designs Directs Debris To The Sides, Not Back At You, Extra Large Diameter Driving Head Improves Strike Accuracy, Patented Isocore Shock Control System Absorbs Strike Shock Vibration To Reduce The Punishment Your Body Takes, Transferring 2 Times Less Shock Vibration Than Wood Handles, Ideal For Single Handed Use When Doing Precision Demolition Work Demolition Head Or When Driving Masonry Nails, Stakes Or Chisels Driver Head