Self-defence Pen

this is my 6th intructables. this is a very cheap and non lethal weapon. i know i have no pics in have no camera.

Step 1: Materials

small screws (like for electronics but bigger)
bic mechanical pencils
a small saw or scissors    

Step 2: Steps

1. Pull off the thing with the eraser on it.
2. Cut off the opposite side to the eraser (a little more longer than your fist length).
3. Now put the screw (if it fits) and screw it in.
4. Now test it on a friend this will help you form a fist and test it with lightness (i tested it and it hurts a lot with little pressure).