Grinding stone for NISHIGAKI, for high-speed steel

[Features] ● About 300 6.5mm iron drills can be polished.

[Usage] ●Drilling candle type dedicated whetstone for high-speed steel.

[Specifications] Outer diameter (mm): 48 Grit size (#): 170 Whetstone type: CBN whetstone

[Specification 2]
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[Material/Finish] CBN whetstone

[Set contents/accessories]
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[Caution] ● Carbide drills and concrete drills cannot be ground.