About Our Ring

Answers to the most frequently asked questions about our ring:

How sharp is Defender Ring? What can it cut?

Defender Ring is a very sharp, pointed knife weapon. It can cut through rubber, plastic and metal. It can easily cut through the skin of an attacker.

How deep can Defender Ring cut into skin?

Deep enough to cut blood vessels and strike nerve cells.

Click here to view a drawn-to-scale diagram of Defender Ring cutting into human skin.

Epidermis, the outer layer of skin on humans is on average 1 mm deep and equal to 20% of the blade length.

Dermis, the next layer, is 2-3 mm deep and contains blood vessels and nerve endings. Defender Ring can fully penetrate the Dermis layer of skin with 60-80% of its blade length.

How long does it take to unscrew the ring top of Defender Ring?

Defender Ring can be unscrewed in approximately 2-3 seconds. With practice, most people can unscrew the ring in less than 3 seconds.

How do I defend myself with Defender Ring?

There are 3 main moves you naturally know, that you can use to defend yourself wearing Defender Ring.

1. Punch
Wear Defender Ring, make a fist, and punch an attacker in the eyes, throat or face to create a deep puncture wound.

2. Slash
Wear Defender Ring, make a fist and slash an attacker using a sideways motion in the eyes, throat or face to create a long gash.

3. Grab and Pull
Wear Defender Ring on the inside of your palm so the knife is facing inward instead of outward. Grab an attacker's arm and pull to gouge and create a long gash.

What can Defender Ring do for self defense?

1. Inflict Serious Pain to an Attacker

Defender Ring's knife weapon can strike nerve cells and inflict serious pain to an attacker.

2. Cause Significant Damage to an Attacker

Defender Ring's sharp knife can cut skin and blood vessels, drawing blood and causing significant damage to an attacker.

3. Collect DNA of an Attacker

Defender Ring can collect the DNA of an attacker through skin cells or blood.

What's the difference between punching an attacker, and punching an attacker wearing Defender Ring?

Your normal punch may not be fast, strong, or damaging to an attacker due to your size, age, strength, or many other factors.

Imagine having a sharp blade attached to your fist while you fight off an attacker. That's the advantage Defender Ring gives you.

Your punch wearing Defender Ring can inflict pain, cause damage, and collect DNA due to the sharp nature of the weapon and its ability to pierce and cut skin at low force and slow speed.

How big is the knife?

The knife is 5 mm in length by 2 mm in width. It's a quadruple-faced blade with thin grinded edges and a pointed tip.

What is Defender Ring made of?

Defender Ring's band and knife are made from 316L Stainless Steel, known for its strength, durability, corrosion resistance, and hypoallergenic properties.

Defender Ring's tops are made from different materials including 925 Sterling Silver, 316L Stainless Steel, 14K Gold, Rose Gold, and Colored Enamels.

Does Defender Ring require any maintenance?

As both jewelry and a self-defense weapon, Defender Ring must be intermittently cleaned and cared for to maintain its appearance and functionality.

How are the ring tops interchangeable?

All Defender Ring tops have a nut thread which allows them to connect to Defender Ring band's bolt thread.

All Defender Ring tops can be interchanged with one another and fit on all Defender Ring bands. If you have any questions, please email us at hello@defenderring.com

How many revolutions are on the thread of Defender Ring?

The Defender Ring thread has approximately 3.25 revolutions.