All of our Sidelight Fiber Optics are completely flexible and feature a superb light transmission for bright and consistent illumination. The cable also emits light through the end of the cable. Minimum bend radius is 18mm. Core Diameter 2.5mm Overall diameter 4.0mm. Photo showing dimension has protective sheathing removed. The price is per l.f. For example, if you need 25′, simply order a quantity of 25. Click to download a spec sheet.