Product Details:

Use to Expose Fresh Diamonds on Drills.
Achieve maximum life for your diamond drills by using the correct sharpening stone. This highly abrasive stone removes worn diamond and bond contact, exposing fresh cutting crystals.
CRL Sharpening Stones are designed for use with Diamond Core Drill Bits and Diamond Miniature Drills.
When using a CRL Sharpening Stone, make sure the drill diameter is smaller than the sharpening surface.
Always saturate CRL Sharpening Stones in Diamond Tool Coolant thoroughly before use. This will avoid any un-necessary heating of the drill bit.
Length:        7 in (177.8 mm)
Width:         2 in (50.8 mm)
Thickness:   1/2 in (12.7 mm)