Eminently portable and usable dry this is all a person needs to maintain a razor edge. It's a double sided diamond hone with a medium (600) surface on one side and a fine (1200) surface on the other. The plate and it's plastic sleeve weigh only 1.25 ounces. Even the most discerning blade enthusiasts will welcome this tool into their kit. Sharpening stones wear away with every stroke but diamonds are forever. You can expect this little gem to be good for many decades of daily use.