What Is a Finger Blade

A Revolution in Cutting Tools The JACS FingerBlade is a cutting tool that fits on the users finger. It is utilized to open all sorts of boxes and packages, as well as cut materials such as poly, plastic, paper, foam, fabrics, rubber, string, tapes, twine, strapping, cardboard and more.

Why do some knives have rings?

Many users have found that ring-handle knives are easier to pull from the sheath than their plain-handle counterparts. … The ring also allows the knife to index quickly in the hand. Keep your finger in the loop as you draw it out, and the knife automatically seats itself in your grip.

Why are there rings on swords?

The heavier the weapon, the harder it will cut. The rings of the sword help manipulate the center of gravity, thus allowing for more control. The rings on a dadao are also meant to help the wielder intimidate any enemies. Some dadao wielders would shake their swords in the air, creating a loud clanging sound.