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The Handy Safety Ring Knife offers you the convenience of a knife at your fingertips all day long. Never worry about repeatedly reaching for a retractable utility knife again! With a small but heavy-duty cutting blade, this all-purpose knife ring is ideal for a range of professional and industrial settings.

The Original Handy Safety Knife - Utility Ring Knife for Finger with Sharp, Curved Blade - Ring Size 10 - Black - Standard Blade - Dozen - by Handy

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Metal Self Defense Ring Knife Flip Blade - MEGAKNIFE

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Adjustable Finger Ring Blade Self-defense Ring Outdoor Security Defense Jewelry Tool Hand-stabbed Hidden Knife

Metal Self Defense Ring Knife Flip Blade - MEGAKNIFE

Metal Self Defense Ring Knife Flip Blade - MEGAKNIFE

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Metal Self Defense Ring Knife Flip Blade - MEGAKNIFE

Convenient Cutting: This ingenious ring knife offers you a great convenience of easy cut help all day long. Wear it on your fingertips to enjoy your hobbies without the interruption of searching for a blade tool.

TOGRAND Safety Finger Ring Knife, Portable Utility Cutting Helper Tool with Sharp and Strong Curved Steel Blade, Ring Size 0.8Inch/2CM Diameter