NRT54460F - Fine
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NRT54461M - Medium
NRT54462C - Coarse
NRT85565B - Fine / coarse
NRT87305G - Used for sharpening gouges
NRTMF144T - Triangular slipstone
NRTMF214R - Round slipstone
NRTMF344H - Half round slipstone
NRTMF34SQ - Square slipstone
NRTMS14RE - Round edge slipstone