Optical fiber test extension cable: waterproof and dustproof, pressure-resistant and drop-resistant, excellent sealing SC/-SC/ Make up for OTDR test blind spots: no splice in the middle of the fiber Small size, light weight, easy to carry, Has excellent sealing performance waterproof, anti-fouling, explosion-proof Fiber Type:Single Mode Connector Type:SC/ Model Number:SC/-SC/ Type:500M Colour:Yellow Material:Plastic Package Contents: 1 * Fiber Tester Only the above package content, other products are not included. Note: Light reflection 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.