6804.10.00 | - Millstones and grindstones for milling, grinding or pulping | |
6804.21.00 | -- Of agglomerated synthetic or natural diamond | |
6804.22.00 | -- Of other agglomerated abrasives or of ceramics | |
6804.23.00 | -- Of natural stone | |
6804.30.00 | - Hand sharpening or polishing stones |