L-com offers an extensive line of precision dual wavelength (1310/1550nm) Singlemode fiber optic attenuators. The FOATLCA-12D is the perfect solution for attenuating Single mode fiber connectors for both lab and commercial applications. The FOATLCA-12D utilizes an "APC" polish on the LC connector and is rated to 12db. Constructed of the highest quality materials and factory tested, this series offers the widest array of connector styles and polish types. Order today!