Thor copper hammers have a malleable Iron head fitted with two cylindrical faces of pure electrolytic copper on a wooden shaft. Available in 6 different weights. The malleable Iron head provides the weight for the blow and the the Copper faces also provide weight whilst transferring the force to the item being struck without fear of damage. Ideal where a heavy blow is required combined with a relatively small striking area. These copper hammers have faces that are designed to wear and can be easily replaced as spare faces are available. They are used as a general-purpose soft-faced hammer in automotive and general engineering for assembly, repair and maintenance. (No.4 size hammer has a slip-on handle - all other sizes have the usual wedge type handle fitted.) Size: 4.Weight 2830g.Diameter 50mm (2 in).