THE NINTENDO NES 3.8 mm BIT TO OPEN YOUR GAME CARTRIDGES TO BETTER CLEAN THE DIRT, GRIME, YEARS OF OXIDATION AND SLIGHT CORROSION FOR BETTER PLAY.
 PLUS USE THE CONTACT CLEANING ERASER TO BETTER CLEAN YOUR GAME CONTACTS THIS WILL HELP PROLONG THE LIFE OF YOUR NES GAMES and SYSTEM
JUST Q-TIPS AND ALCOHOL HELP BUT DON'T ALWAYS SOLVE PROBLEMS. AFTER YOU USE THIS THERE WILL BE NO MORE BLOWING TO GET YOUR GAMES TO WORK.
YOU WILL RECEIVE A DETAILED GAME CLEANING SHEET TO FOLLOW. 

BIT COLOR MAY VARY