Diamond honing sticks are manufactured from specially selected pda 768 grade synthetic diamond from element six [ireland]. These specially selected diamonds are bonded with german formula matrix. Special sintering is carried out with graphite of g535 grade imported from toyo ltd [japan]. These diamond honing sticks manufactured by the company are of world class quality and are recommended for cast iron, selected grades of forged steel and alloy steel. Special miniature sizes can also be manufactured as per customers` requirement.