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:66, Page:466
SPECS: 2" (5.1cm) x 8" (20.3cm) x 1/2" (12.7mm). Medium
(black) and Fine (white) grits.