"The tool the knife industry doesn't want you to own. Why pay thousands to sharpen your knife edge... when you can easily do it yourself with this tool? Gives your knife new life, again and again Pays for itself in 3 uses Simple, indestructible, precise No need for knife sets that collect dust No gimmicks, no upgrade cycles This rolling knife sharpener breaks the replacement bracket and keeps your knives razor-sharp."
Not enough history yet to show a trend.