[VFL in Pen Shape]- The visual fault locator (VFL) is an essential tool that quickly and easily locates problem areas in fiber cables. The choice of a continuous wave output mode for steady fault illumination or a flashing output mode makes for easier fault location. Due to its compact and robust Pen Shape Pocket design, the VFL for fiber optic is Perfect for ultimate portability. [All Aluminum Construction]- This Pen Shape VFL Tester is built with durable Aluminum Alloy, compared with cheap plastic, this Aluminum body is more robust and durable, which can bring excellent protection, good hand feelings and create good contact continuously. [Excellent Laser-Head with high quality Laser-Chip]- This compact but powerful Pen Shape Fiber Optic Tool (with an output power up to 30mW) features with excellent Laser-Head, which provides high fiber concentration and little divergence, easily penetrate through a 30km fiber. This high quality laser-chip ensures years of trouble-free operation [Universal Optical Connectors with Dust Cap and replaceable Ceramic Sleeve]- The integrated universal 2.5mm adapter makes for easy connection to SC, ST and connectors. The Dust Cap prevent the fiber connetor from pollution. The replaceable Ceramic Sleeve extends the service life of Visual Fault Locator. [Long output distance]This 30mW visual fault locator has a strong red light output from the battery, which can travel for 20-30 kilometers. The efficient power circuit makes the power stable. Colour:Black Material:Aluminum alloy Size:175x26x26mm Package Contents: 1 x Visual Fault Locator 1 x Carrying Pouch 1 x Lanyard 2 x AA battery Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.