Nakayama Tono-ko (Polishing Powder) - Yellow Contents: 100g Grain Size: Finishing (8000#↑) This polishing powder is made by finely crushing Nakayama whetstones and processing them through the same steps as clay production. Nakayama Tono-ko is made from powder that has been sieved dozens of times, resulting in finer particles than the white Tono-ko also on sale. It produces a hazy to semi-mirror surface finish. Natural polishing powder becomes finer (more pulverized) as you polish, so add new powder as soon as the polishing power decreases. Uses: Pot polishing, sheet metal polishing, kasumi (haze) polishing, rust removal from blades, finishing polishing of blades, yakiba-tsuchi (clay for hardening blades) Available for immediate purchase.