If you have rusty tools it is pain to use them and they just look unprofessional follow the steps and you will have a shiny and beautiful tool.
Step 1: Initial Sanding
Start by rubbing off the top layer of rust with a dry sponge. After you are done with this step you will have rust dust everwhere vacuum that up.
Step 2: Cleaning
Wipe clean the rust dust with a towel
Step 3: De-Rusting
Now spray some wd-40 or engine degreaser to loosen up the rust then rub away with a toothbrush. The tool should like the last picture when you are done with this step.
Step 4: Sandpaper
Now start sanding to remove the last layer also use the dry sponge again. Then you are close to finishing.
Step 5: Cleaning and Finish
Brush down the tool with soapy water. Wipe clean now you done but an extra step could be taken to make it look really good, spray paint the tool with a durable paint.