The 3M Fibrlok Single Fiber Optical Splicing System 2500 Series is designed to easily splice any combination of 250 or 900 micron coated fibers with inexpensive tooling and no electrical power. Fibrlok single fiber optical splices utilize a metallic splicing element held inside a molded plastic body and cap to provide a fast, permanent splice. Index matching gel at the fiber splice interface helps enable a low loss splice that maintains transmission quality over the life of the network. Assembly of the inexpensive Fibrlok splice requires only removal of the fiber coating, cleaning and cleaving of the fiber.3M offers three different configurations of single fiber splices to meet different application needs: 3M Fibrlok II splicing for 250 um or 900 um fibers, 3M Fibrlok 250 um for splicing 250 um fibers and 3M Fibrlok II Splice/Holder which virtually eliminates the need for a separate assembly tool by integrating the Fibrlok II splice, tool and tray together.