Working our way around, we have a heat gun, some dish soap, a silicon bending cord, a ratchet tubing cutter, sand paper, and two deburring tools. The red kind on the left is the one you'll commonly ...

There are times when you want to debur the backside of a hole, but you don't have enough room to use a regular deburring tool-think for example of the inside of a tube that you've drilled a hole in.