KL-510 Fiber Activity Connector can test fiber, do experiment and connect fiber. Specifications: KL-510 locates fiber with high precise V-groove and makes two fibers align, the loss less than 0.5dB(SSM).The two adjustable site-seats can be applied to all kinds of coated fibers.Dimension: 80mm(W) x80mm (D) x25mm (H) Weight:370g