① The blade is tempered, black coating prevents rust.

② The blade is polished on a one by one basis by hand and is tested on leather sheets, to make sure that it cuts very well.
We ship them in their best cutting condition, with oil to prevent rust, and protected by a tube.

We deliver our products to our customers in the best possible cutting condition.


We ship the tools putting oil on to the blades so as to prevent rust and cover it with a vinyl tube to protect it.
Please refer to the Instagram video/website banner on usage and maintenance for instructions on sharpening blades.
If you can’t sharpen the blade well, you can use our “Resharpen blade business”.
(“Resharpen blade business” is mentioned in OKA FACTORY’s 4 commitments)