Iron Hammer made of mechanized steel. It has a threaded cap that allows steel pellets to be inserted inside the sphere, in order to adjust and calibrate the weights to the applicable regulations. The Iron Hammer includes a handle with a cylindrical aluminum grip and a zinc-plated steel cable of the appropriate length (see the length table). Both the sphere iron hammer and the cap are powder coated.
The 4.00 kg (AL402) and 7.26 kg (AL405) iron hammers have the Certification of Approval granted by the IAAF (I-99-0177 and I-99-0176, respectively).