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

Worksharp now makes a rolling knife sharpener! - The Gadgeteer

INSTRUCTIONS – Tumbler Rolling Knife Sharpener

Review of #TUMBLERWARE Tumbler Diamond Rolling Knife Sharpener Set by Abdulla, 3756 votes

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UPDATE: The Tumbler Knife Sharpener is a Knock-Off - Core77

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Celebrate the holidays with the gift of precision. Our Limited Edition Tumbler Gift Set (2 pack) is the perfect present for culinary enthusiasts. With

Tumbler Rolling Knife Sharpener Holiday Gift Set (2 Pack)