... forged , polished 4.hardness: HRC45-55 machinist hammers1.Head:(1) material: 45# carbon steel(2) drop forged(3) ... (4) hardness: HRC 45-552. Surface of head(1) mirror polished(2) half polished(3) full polished3. Handle ... (1) hardwood: original color wood or bleached wood(2) ... 0.4kg , 0.5kg , 0.6kg , 0.8kg , 1.0kg , 1.5kg , 2kg WEIGHT(kg)QTY(pcs)N.W/G.W ...