ORANGE BLACK GRIT 3-WAY 100/180 10 SEK Orange black grit 3-way 100/180 buffer sanding blocks can be used on any type of gel, fiberglass manicure or pedicure or acrylic nail work. In stock. Add to basket Del Product Description Reviews Orange black grit 3-way 100/180 buffer sanding blocks can be used on any type of gel, fiberglass manicure or pedicure or acrylic nail work.