Spectra stunt kite line is a high performance kite line that revolutionized sport kiting. Shanti's Spectra line, trademarked Speed line is competition line made with Spectra 1000 or high-modulus polyethylene fibers. Its exceptionally smooth braided construction makes Speed line slippery and very, very thin. This means hardly any wind drag. Plus Shanti Speed line stretches less than 4%. Designed for dual line and quad line flying. If you need string for a single line kite try here-> Single Line Kite String