Composed mainly of tungsten carbide (WC) bits adhered with a metal binder, such as cobalt, cemented carbide combines the stamina of tungsten with the sturdiness of other metals. The structure of cemented carbides can be customized to fit specific applications, leading to the production of ranges like YG6, yg20, and http://lideritv.ge/index.php?subaction=userinfo&user=drumriver2