【Focusing Lens is Y Version,please you comfirm before order.】 | 【Window Lens and Focusing Lens】ATOMSTACK replacement laser window lens and Focusing Lens are a perfect fit for the ATOMSTACK 10W series (A10PRO/ S10PRO/ X7PRO) laser engraving machine and M50 laser module. | 【Allowing Your Laser Module to Perform at Its Best】ATOMSTACK laser module lens is designed to ease the issues caused by cracking or dirt on the original window lens, allowing your laser module to perform at its best. | 【Easily Replaceable】Detach the original lens, wipe down the laser internal parts and new lens with a clean, dust-free cloth, and then fix the new lens in place. | 【Package included】1x 10W window lens, 1x 10W Focusing Lens Y Version.