Features 1. Never worry about losing a screw again and mixing up all screws, with this amazing magnetic mat, you will know exactly each screws position and function. 2. Each color represents one type screws, you could put the screws on specific color position when you take the screws out from your cell phone. 3. Spacious and secure, the mat will catch and hold screws as you pull them out of a device. 4. Screw chart is resistant to liquid, dirt, and UV radiation damage. 5. There are several screws in the machine can not be absorbed by magnetic owing to its material, and you can place it in the appropriate location.