Hammer head: high quality steel, after vacuum quenching treatment, uniform hardness, good wear resistance, the outer diameter and the inner hole of the cylinder corresponding. Hammer handle: after quenching and tempering treatment, it can ensure to match the service life of hammer head. Sizes available for various brands size size weight (kg) Size (cm) 25T 2 50*6*315(total length) 38T 350 *6*350(total length) 88T 350 *6*290(total length) 138T 5 60*6*390(total length) 138T 5 60*6*390(total length) 200T 9 70*6*510(total length) 280T 10 80*8*550(total length) 88T 5 60*6*345(Total length) 130T-160T 5.5 60*6*430(Total length)