it is also the lightest element isotopes are atoms of the same element with different numbers of neutrons in ancient times the elements referred to fire earth water and air helium is the second most common element in the universe but is very rare on the earth
Featherweight is a weight class in the combat sports of boxing, kickboxing, mixed martial arts and Greco-Roman wrestling.
The similar Featherweight 221K was producded at the Singer plant in Kilbowie, Scotland from 1947 until the late 1960's after more than 350,000 had been produced. By the early 1960's with sales of the classic black model dropping, the factory started to produce a new white model, the Featherweight 221K-7.