Chukyokenma, M Rust Eraser, Sabitoru

This little tools is just amazing. I was able to remove all the black dirty stuff from all my pans.

you don't need to know Japanese to know how to use this, when there are some helpful reviews that tell you what to do right here on amazon (btw Thank you guys!), or you could just YouTube on how to use it!Worked a charm on some stained scissors

Used it on old stained carving set and it is much improved

This is a handy cleaning "eraser" for cleaning your Japanese whetstones effectively. You simply apply some water to the stone and gently rub until the stone is clean. The eraser itself is quite small and made of a solid abrasive material. It can also be used to remove rust from carbon steel tools or kitchen utensils.

I had a couple of very badly tarnished Bowie knives that I had owned for about 45 years. It took a bit of elbow grease but the blades now look bright and shiny with no obvious scratching to the surface

Instructions are in Japanese. So OK if you can read it, but useless if you can’t, like me.I don’t think Amazon should sell any product without user instructions in clear English

If you have Carbon steel Japanese knives you need one of these.

I use this to clean the crap off my whetstones after use and for that is works perfectly

The media could not be loaded.  Works great, chews thru rust effortlessly! Feels like a grittier magic eraser. Make sure to go with the grain of the metal to avoid scratches.