New Original Blu-ray Laser Lens KEM-850 KES-850A KES-850 Replacement Repair Part for PS3 4000 Slim 250GB 500GB Console Manufacturer: Sony Condition: Brand New in box, Safety Packaging. Laser lens ony without deck, special for the newest Sony PS3 slim 4000 ECH-400X series 250GB 500GB console Our laser replacement is an easy part to fit, the installation takes about 15 minutes. You don't need anyspecial tools to fit the part, you can do the job with just two screwdrivers and a stanley knife. Two months warranty.