Does the Tumbler Knife Sharpener work?

Does the Tumbler Knife Sharpener work?

Sharpen in style with Tumbler. Traditional sharpening takes time to master. With the patent-pending Tumbler Rolling Knife Sharpener™, anyone can get

Tumbler Diamond Rolling Knife Sharpener Set

Tumbler Rolling Knife Sharpener Detachable Magnetic Knife

Precise & Long-Lasting Sharpness: Any serious chef knows quality knives are expensive. Keep yours cutting like new for much, much longer with a

Tumbler Rolling Knife Sharpener™ - Knife Sharpening Made Easy - Rolling Knife Sharpening System for Kitchen Knives - Knife Sharpener Kit Offers 15

INSTRUCTIONS – Tumbler Rolling Knife Sharpener

Tumbler Innovative and Super Easy Knife Sharpener Review

HORL®2 Pro

Worksharp now makes a rolling knife sharpener! - The Gadgeteer