Phone: 510.409.0217
Tue–Sat: 9AM – 5PM PST
Superior Japanese Hand Tools for Woodworking, Kitchen, Gardening and Grooming

Business Hours: Tuesday - Saturday  9 a.m. - 5 p.m. (PST)

We are sorry we will be away again from Thurdsay Jun 1st through Jun 5th. We will reopen on Tuesday Jun 6th. Thank you for your patronage.


4000 grits
205mm (8-1/8") x 75mm (3") x 25mm (1")
80 Rockwell Hardness
Available Options


Soak the stone for about 20 minutes, or until the stone stops producing bubbles. And splash water on the stone as needed.

*Ceramic/High pressure cast and 1300 degree celcius treated

**Outlet: These stones have a few hair cracks, but it is just cosmetic and they don't cause major damages, like falling apart.

It is a medium fine stone after using a medium grit (#1000, #1200, #1500 or #2000)

It has nice nutural stone feeling to it

It cuts faster, lasts longer and offers better result than other #4000 stones



  • September 25, 2017 by Theo Padouvas
    I love this stone! This is the best man made stone I have used. It cuts super fast, it has a great feel to it and stays flat. I highly recommend it!
  • September 8, 2015 by Mihai Radu
    Absolutely sensational. Best stone I have - I like it better at its grit than Sigma or Yaginoshima. Love it. Indeed all I ever wanted. Thank you
  • July 19, 2015 by Julio Alonso
    Hello ! I´d wish to share my thoughts about this product. Just the BEST WATERSTONE you can get on the market. it has got the properties I dream aboput in a sharpening stone, fast cutting , longlasting flattness, no clogging, a few minutes soaked in water and it´s ready to go but the most important matter about sharpening stones is their feel, this is something you get conscious with experience a... read more
  • January 23, 2015 by Chris Vandiver
    Suzuki-ya's #4000 stone is one of the best stones I have ever used. Exceptionally nice feedback and quite smooth feeling in use. Leaves a very fine and uniform scratch pattern. Easy to use the whole stone. Very dish resistant and amazingly fast cutting!. I highly recommend this stone.