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)

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


Please note that the #4000 stone may come with "hairline cracks". These cracks are normal and will not effect the performance or quality of the stone.

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

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.