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SKU 7000082277
Legacy SKU 60980021491
UPC 05010027718302
Product Number 6220J

3M Flexible Diamond Whetstone 6220J features micron-graded flexible diamond abrasive bonded to a lightweight, hand-held block for sharpening cutting tools and faceting stones.

  • Use for precision faceting and sharpening of chisels, blades, knives and carbide tools
  • Metal bond withstands heat during grinding
  • Aluminum holding block is lightweight for easy grip and less operator fatigue
  • Diamond mineral cuts aggressively to reveal tool's sharp cutting edges
  • Open dot pattern reduces loading
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On it's way to you May 28   


Minimum Order 3 Items
Order Increment 3 Items
  Superior Cutting
  Multi-Purpose Tool
  Fast Shipping
  Lowest Price Per Item
Product Dimensions
Imperial Metric
Weight 0 NULL
Width 0 null
Length 0 null
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Thickness 2.953 in 75 mm
Shipping Dimensions
Weight 3.13056 lb
Length 12.99213 in
Width 5 in
Height 1.73228 in
Color Red


  1. What is the 3M™ Flexible Diamond Whetstone?

    The 3M™ Flexible Diamond Whetstone is an abrasive tool that can sharpen your knives and tools.

  2. What are its dimensions, and how many do I get in a case?

    Our Flexible Diamond Whetstone has dimensions of 8 inches by 3 inches, and you will get three pieces per case.

  3. How fine or coarse is the Micron-grade M74 abrasive surface on this whetstone?

    . This whetstone has a medium grit rating of M74, which provides consistent cutting action for general purpose sharpening tasks.

  4. Does this whetstone have any advantages over traditional sharpeners such as oils stones?

    . Yes! Unlike oil stones and other waterstones, our diamond-infused flexible whetstones do not require additional oil or water to function properly. Its flexibility allows it to easily conform to any workpiece shape eliminating flat spots. It's durable so it lasts longer than most traditional sharpener types too!

For industrial/occupational use only. Not for consumer sale or use.
3M industrial and occupational products are intended, labeled, and packaged for sale to trained industrial and occupational customers for workplace use.  Unless specifically stated otherwise on the applicable product packaging or literature, these products are not intended, labeled, or packaged for sale to or use by consumers (e.g., for home, personal, primary or secondary school, recreational/sporting, or other uses not described in the applicable product packaging or literature), and must be selected and used in compliance with applicable health and safety regulations and standards (e.g., U.S. OSHA, ANSI), as well as all product literature, user instructions, warnings, and other limitations, and the user must take any action required under any recall, field action, or other product use notice.  Misuse of 3M industrial and occupational products may result in injury, sickness, death, or property damage.  For help with product selection and use, consult your on-site safety professional, industrial hygienist, or other subject matter expert.
Keep It Looking Sharp

Cutting tools are designed to do what their name implies – cut sharp and slice through the workpiece surface. However, even cutting tools get dull and wear after repeat use. That's why 3M designed the 3M™ Flexible Diamond Whetstone 6220J. This abrasive accessory uses micron-graded diamond mineral to abrade the surface of the cutting tool and restore its acute cutting capabilities.

Diamond mineral is one of the toughest, most durable natural minerals. Its sharp cutting abilities render it a good match for cutting tools, as it can slice cleanly through dulled surfaces to reveal the sharp edge underneath. Given diamond mineral's inherent aggressiveness, this accessory is commonly used for precision faceting and sharpening of chisels, blades, knives and carbide tools. The diamond mineral is adhered to the aluminum block with a metal bond. Metal bonds are some of the toughest bonds and help it stay strong during grinding.

Diamond mineral on 3M™ Flexible Diamond Whetstone 6220J is fastened to the block in an open dot pattern. The open dot pattern allows swarf to escape, so debris will not clog the mineral. This helps sustain a sharp cut and prolong abrasive service life. 6220J also comes in a variety of grades to accommodate varying degrees of stock removal. Choose from 125, 74 and 40 grades. Grades like 40 micron tend to finish finer. Grades like 125 micron tend to cut more aggressively. Each block is color coded by grade to help reduce the risk for error during a multi-step sequence. With up to five blocks per case, operators may also reduce the need for reorders.

This small but mighty accessory comes in handy when your cutting tools start to dull. Sharp-cutting diamond mineral tackles dull surfaces, and the lightweight hand-held design makes it easy to access contours and edges on the cutting tool. Keep this accessory at your disposal, so you won't have a reason to dispose of your valuable cutting tools.

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