Sunnen S18-J45 Honing Stone 4 piece Set. 150 Grit Sunnen Honing Stone | 1.75"-2.0" Range |. Use with Sunnen SN-75 and SNR-185 Hones. Previously sold as SN-200.
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SUNNEN Cylinder Honing/Hone Stone Set N37-J65 AN501 280-grit 20 Ra finish