Milling machine are tools designed to machine metal, wood and other materials. Milling can be done with various ranges of machine tools. Milling machines can be outfitted with a number of Tool Heads to accomplish different machining needs. Some of these tool heads include cutters, rounding mills, fluted mills and ball end mills. Some milling machines have rotating tool ends that can change depending on the desirable task—computer programming communicates with the machine when to change its tooling. The size in which it is available are:- 00, 0 , 1 ,2.