Strips of industrial razorwire wrapped around padded hand guards — a lower-tier fighting weapon that transforms every punch, grab, and palm strike into a cutting attack. Glass Hands are crude, dangerous to the wearer if improperly constructed, and devastatingly effective in the close-quarters grappling that characterizes lower-tier violence. The razorwire is typically salvaged from perimeter security installations and wound around hand-shaped frames made from molded industrial foam.

The weapon's effectiveness comes from its contact versatility — unlike a blade, which cuts in one direction along one edge, razorwire wraps present cutting surfaces on every surface of the hand. Punches cut. Grabs cut. Blocks cut the attacker. Even a glancing touch draws blood. In grappling situations, an opponent wrestling with someone wearing Glass Hands discovers that every point of contact becomes a wound. The psychological effect of being cut on every surface that touches the fighter is often more decisive than the physical damage.

The risk to the wearer is genuine. Poorly constructed Glass Hands shift during use, exposing the wearer's own skin to the razorwire. Lower-tier fighters accept this risk as the cost of an effective weapon, and experienced users bear characteristic scars on their hands and forearms from construction, training, and combat. These scars have become markers of Glass Hands experience — a visible résumé of lower-tier fighting capability.