Forged carpenter's hammer with a rubber handle. Carpenter's hammers have a forged flat handle, which allows it to withstand much larger direct impacts than round handles. 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 pieces with their side edges.