Fiskars IsoCore General Use Hammer XL 20oz/15,5", length 392 mm, height 35 mm Patented IsoCore™ Shock Control System absorbs strie shock and vibration to reduce the punishment your body takes, transferring up to 70% less shock and vibration than wood handles. The forged, heat-treated steel head is finished with a rust-resistant coating. SoftGrip™ handle features a sculpted profile to fit the natural shape of your hand and a patent-pending strategic grip pattern with large dimples where fingers rest for maximum grip and small dimples where the palm rests to help prevent blisters. Magnetic nail-starter groove allows you to start nails with one hand in hard places. Rip claw pulls nails quickly and easily.