20pcs VFL Fiber Optic Visual Fault Locator Replacement Parts, Include 10 Ceramic Core Tube Sleeves & 10 Metal Heads Tips for Fiber Optic Tester Network Cable Tester & Light Meter

["Package Content: You will get 20 pieces of VFL fiber optic visual fault locator replacement parts in the package, including 10 optical ceramic core tube sleeves and 10 metal heads tips. Enough for your uses and needs.","Excellent Material: Our visual fault locator replacement parts are made from good quality ceramic core and metal, reliable, sturdy, not prone to break, or damage. You can buy with confidence.","Friendly Reminder: The ceramic core is delicate, so please avoid applying excessive force during installation to avoid damage.","Easy Installation: Replacement is simple and hassle‑free. Just open the cap, insert the component into the pen body, tighten the metal head clockwise, and you’re ready to go—no complicated tools required.","Important Note: If the red light fails to enter the fiber, first check whether the ceramic core is damaged before considering replacing the entire fault locator pen."]