Features Made of high-quality materials, it is durable and corrosion-resistant for long-term use. Accessories on fiber optic connector inserts/devices/modules can be removed with a single touch, ensuring optimal cleaning. Specifically designed to work with female connectors, fiber optic pens are an essential tool for fiber optic cable maintenance. This instrument can clean the end face of the ring, remove dust, oil and other sundries on the end face without scratches. The cleaning system rotates 180° to perform a full scan, which is widely used by optical network maintenance personnel, engineers or equipment and equipment manufacturers. Features: -Made of high-quality materials, it is durable and corrosion-resistant for long-term use. -Accessories on fiber optic connector inserts/devices/modules can be removed with a single touch, ensuring optimal cleaning. -Specifically designed to work with female connectors, fiber optic pens are an essential tool for fiber optic cable maintenance. -This instrument can clean the end face of the ring, remove dust, oil and other sundries on the end face without scratches. -The cleaning system rotates 180° to perform a full scan, which is widely used by optical network maintenance personnel, engineers or equipment and equipment manufacturers. Specification: Condition: 100% Brand New Material: Plastic Type: KOC-250, KOC-125 (Optional) Application: KOC-250 Fit for FC, SC, AT, E2000 2.5mm; KOC-125 Fit for LC, MU 1.25mm/2.5mm Weight: Approx. 33g / 1.2oz Applications:  1. Fiber network panels and assemblies 2. Outdoor FTTX applications  3. Cable assembly production facility  4. Testing laboratories  5. Server, switches, routers and OADMS with SC and LC interface Package List: 1 x Fiber Optic Pen 1 x Instruction Manual Package List