Cheap And Discounts Size 27.3(25.3)*14.3(12.3) *2.3 mm / Diode Laser Protect Sapphire Windows / AR@808+755+1064nm Wholesale. Buy Directly From Merchant BeiJing LangDiLaser Source Co., Ltd.. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.