"Unleash the Fury!" Fury bow string material from Brownell is made from 100% Ultra high molecular weight polyethylene, an extremely tough material with the highest impact strength of any modern thermoplastic. This amazing material gives you increased speed and stability, as well as eliminating creep. Brownell offers their Fury bow string material in the smallest diameter of .011, allowing you to build bow strings with higher strand counts. Pound for pound, this is Brownell's strongest bow string material yet! Recommended strand count of 20 for traditional longbows and recurve bows. Available in colors of black, grey, and purple. Black and Purple are available in 1#. Grey is available in 1#, 1/2#, and 3/4#. Please specify. 100% extremely tough UHMWPE (Ultra high molecular weight polyethylene) Highest impact strength of any modern thermoplastic Increased speed and stability No creep Small .011 diameter Recommended strand count of 20 for longbows and recurve bows