1It is the heart of the optical drive and the most sophisticated part. It is mainly responsible for data reading. 2Forged with high quality materials, fine workmanship, standardized design. 3Made of high-quality electronic components, it is reliable and long serving life. 4The optical laser lens can fix these symptoms such as slow-loading times, disc-read errors. 5It is a great optical laser lens replacement for the worn out or damaged laser lens. 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.It is a great optical laser lens replacement for the worn out or damaged laser lens.Specification:Model: SF-DA23 SF-DA23SRSize: Approx. 9.5*7.3cm/3.7*2.9inchWeight: Approx. 64g / 2.3ozPackage List:1 x Laser Pick-up LensNote:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.