This hammer's head is high quality that uses both stainless steel 420J2 and pure copper. The internal copper hammer head cushions the impact, decreases shock when hit and reduces arm fatigue. 【DIMENSIONS】Full length：11.5" / 29.3 cm；Head size：φ1.5" x 4.5" / φ3.8 x 11.5 cm This camping hammer can be used when pulling out the peg with the hole and hook at the rear. This peg hammer comes with a safety belt to prevent slipping out. This CAMPINGMOON's camping hammer's head is high quality which uses both stainless steel 420J2 and pure copper. The internal copper hammer head cushions the impact, decreases shock when hit and reduces arm fatigue.