Metal Detectable Safety Knife Ring

Wear this fully metal detectable safety ring knife on the top side of your finger without restriction, allowing both hands to be free. It weighs only 3.5 grams (0.1-oz), has a 6mm (0.24") cutting depth, and can be used on materials such as pallet wrapping

Metal Self Defense Ring Knife Flip Blade - MEGAKNIFE

The Original Handy Safety Knife - 2-Pack - Utility Ring Knife for Finger with Sharp, Curved Blade - Ring Size 12 - Standard Blade - by Handy Twine

Metal Detectable Safety Knives with Enclosed Blade and

The Latest School 'Weapons Detection' Tech Can Miss Serious

NT Cutter Japanese Stainless Steel Utility Knife Cutting Tool L-500GR Automatic-lock Blade L-Type Metallic Gray Cutter Knife 157mm

Safety Knives - Detectable

Metal Self Defense Ring Knife Flip Blade

Safety Knives - Detectable

Need a self defense knife that won't set off metal detectors : r

STAINLESS STEEL CLIPBOARD