It is 50% Long Glass Fiber Reinforced Nylon 66,ong glass fiber reinforced nylon 66 is widely used in industrial production for the manufacture of pump impeller bearings, circular gears, flameproof requirements of the terminal block, machine spool, electronic tool shell, high iron accessories, cams, bevel gears, various rollers,
link:http://www.lfrt-plastic.com/long-glass-fiber-polyamide-66/50-long-glass-fiber-filled-nylon66.html