Features: Lasereinheit head installation knowledge: When the head leaves the factory, in order to prevent statics electricity from damaging the lasereinheit tube, there are generally protective solder joints (a larger solder joint on the lasereinheit head circuit board or on the cable) to attach the lasereinheit tube The power supply pin is short-circuited to the ground. Before installing the bald head, it needs to be welded with antistatic soldering iron, or the electric soldering iron should be heated to about 250 degrees Celsius-280 degrees Celsius, not connecting the power supply, and then open the protect point. The SFP101N head DVD optical lens boasts superior precise and durability, delivering unparalleled performances for your audiovisual needs. Craft from quality ABS material, this professional component is durability and with stand the rigors of frequent use. Specifications: Material:ABS Length:Approx.3cm/1.18in for DVD Player; Note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color. Package includes: 1pc Optical Pickup Head