HOP-141X Laser Lens Repair Parts for Xbox 360 Compatible with all Model of Xbox 360 141-B 141X (DVD Drive of BenQ).Please remove the ANTI-STATIC PROTECTION before installing.Easy to repair by yourself.It is necessary if your system has the following symptoms:1) System shows a message "Disc Read Errors" or disc appears damaged or dirty on the screen.2) System reads certain games or movies.3) System loads games or movies longer than normal.4) System reads games or movies and seems to be freezed or skipped.