This is a specialty Pentalobe Screwdriver designed specifically for the iPhone 4/4S . It will be required to open your device in order to perform repairs on any of the interal components. The pentalobe screws you will remove are 5-point screws that Apple uses to help prevent tampering, and to secure the casing of the iPhone. This iPhone 4/4S pentalobe screwdriver is made of high quality S2 steel that will resist stripping and chipping. If you should need your screwdriver in a hurry we also have multiple priority shipping options available at checkout.