Note: Before the laser head is installed, the protective welding spot needs to open, then it can be used normally. This kit requires certain professional knowledge and ability, please make sure you know how to wire and use it. Features: It is the heart of the optical drive and the most sophisticated part. It is mainly responsible for data reading. Forged with high quality materials, fine workmanship, standardized design. Made of high-quality electronic components, it is reliable and long serving life. The optical laser lens can fix these symptoms such as slow-loading times, disc-read errors, game freezing, game/movie skipping. It is a great optical laser lens replacement for the worn out or damaged laser lens. Specification: Model: H8151AF Size: Approx. 4.7*4cm/1.9*1.6inch Weight: Approx. 30g / 1.1oz Package List: 1 x Laser Pick-up Lens 1、It is the heart of the optical drive and the most sophisticated part. It is mainly responsible for data reading. 2、Forged with high quality materials, fine workmanship, standardized design. 3、Made of high-quality electronic components, it is reliable and long serving life. 4、The optical laser lens can fix these symptoms such as slow-loading times, disc-read errors, game freezing, game/movie skipping. 5、It is a great optical laser lens replacement for the worn out or damaged laser lens.