DMT 6" Diamond Whetstone Grit:Coarse The 220 and 1000 are

The 220 and 1000 are just over and 1" thick

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The coarse/extra coarse stone is a great stone to have when you need to sharpen very dull knives and tools because it cuts so fast

This is the hardest 1/2" wide wheel that is available for the Magna-Matic MAG-8200 Universal Lawn Mower Blade Sharpener with Modular Table

Diamonds are well known for being the hardest substance around

DMT 6" Diamond Whetstone Grit:Coarse The 220 and 1000 areDescription The benefits of the diamond stone are many. The diamond is the hardest object known so it can sharpen ceramic or carbide tools where other stones cannot. Diamond stones cut very fast, saving you valuable time. The DMT Diamond Whetstones are dead flat and remain flat so they don't need the maintenance of flattening like other stones. Measures 6" long by 2" wide. The DMT interrupted diamond surface is designed for a reason: It works. The