1. metal V groove design, optical fiber butt precision is high, technical indicators are excellent.2. the core structure:the box structure design, good sealing, matching fluid is not easy to lose, weather resistance is strong;3. application optical cable:suitable compatible with any combination of 0.25mm fiber optic and 0.9mm fiber optic.4. easy operation, fast construction speed, high success rate of installation, long service life, simple and convenient maintenance later.5. application:compatible with FTTH technique and optical cable repair.Insertion loss:dB Less than 0.20Echo loss:dB Greater than 40Tensile strength:N / 2 min Greater than 10Working temperature:-40 - + 85Repeat assembly:times greater than 10Applicable optical cable:mm 0.25mm 0.9mm fiber opticSize:45.3*4.6*4 mmMaterial:plasticColour:blackPackage Contents:20 * Fiber optic quick connectorOnly the above package content, other products are not included.Note: Light shooting 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.