100% brand new and high quality Features: Metal V groove design, optical fiber butt precision is high, technical indicators are excellent. The core structure: the box structure design, good sealing performance, matching fluid is not easy to lose, weather resistance is strong. Applicable optical cable: suitable for any combination of 0.25mm optical fiber and 0.9mm optical fiber. Simple operation, fast construction speed, high success rate of installation, long life cycle, simple and convenient maintenance later. Application for FTTH engineering and optical cable repair. Fiber Optic Fast Connector only, other accessories demo in the picture is not included! Specification: Fiber diameter: 125m (657A & 657B) Tight cladding diameter: 250m & 900m Applicable mode: single-mode ; multi-mode Bare fiber tightening force: >5N Clamping force of tight package: >8N Operating temperature: -40~75 Repeated use: IL0.2dB RL5dB Material: Plastic Length: app.4.5cm /1.77in Color:As shown Quantity: 1 Set(Includes two boxes) Note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 10pcs x Fiber Optic Fast Connector