Forged carpenter's hammer with a rubber handle. Carpenter's hammers have a forged flat head, which allows it to withstand much larger direct impacts than round heads. Thanks to the rubber handle, the hammer stays firmly in your hand and doesn't slip when you strike. Forged carpenter's hammers are used in heavy construction work, like nailing frame timbers, dismantling and installing frame structures, and other building tasks that require strong striking power. Forged hammers are designed to withstand only direct force, and you're not supposed to hit things with their side edges.