This is a transparent black Ultimate Racing silicone fuel line measuring 2.5x6mm and 1m in length. This heavy-duty fuel line is an excellent choice for almost all nitro racing applications. Made from special heat-resistant silicone, this line is soft enough to bend around tight areas while remaining tight enough to resist distortion. With an outer diameter of 6mm, this line fits perfectly into fuel tanks. This fuel line has been tested and is trusted by many national and European champions.