Koyo

Koyo is a long established Japanese manufacturer specialising in polishing and sharpening compounds for metal finishing and blade care. Founded in Tokyo in 1926 as Koyo-Sha Co., Ltd., the company produces a wide range of abrasive materials including buffing compounds, polishing rouges and finishing pastes.

Koyo products are widely used by knife makers, sharpeners and metalworkers for refining edges, removing scratches and achieving high quality surface finishes on steel and other metals.