Take a piece of sturdy leather and cut out two portions of sufficient size to wrap around your forearm, from your wrist to near your elbow, one for each arm.
Prepare seven symbols of defense from seven different forms of attack, and a duplicate set. Write these on small pieces of paper in brilliant red ink. Crush the pieces of paper into tiny balls, and set them aside.
Hammer seven metal studs into the leather , placing the balled-up symbols on paper under them, one for each stud. Do this for both arms.
Punch seven holes along the length of the bracers, and run a leather cord through them like a shoelace. Wear them in combat for protection from harm.