Space Age Technology Gives Super Clean Surfaces
Use water as lube instead of honing oil. Cleans up with soap and water. Surfaces stay flat to give consistent results.
Big Book Catalog, Issue:73, Page:456
Big Book Catalog, Issue:73, Page:496
SPECS: 2" (5.1cm) x 8" (20.3cm) x 1/2" (12.7mm). Medium
(black) and Fine (white) grits.