Tungsten Carbide ati Awọn ideri Chrome jẹ lile pupọ ati pẹlu resistance yiya giga.Awọn kẹkẹ lilọ Diamond nikan le lọ larọwọto.Awọn kẹkẹ lilọ diamond wa le lọ awọn aṣọ ti Tungsten Carbide, Chrome, Nickel, Seramiki.