Glass fiber is made up of fine fibers of glass; it is lightweight, extremely strong and robust. Compare to carbon fiber it is somewhat less strong, but it is less expensive and non-brittle. It is used for

☛ Filament windings around rocket cases

☛ Nose cones

☛ Exhaust nozzle

☛ Heat shields for aeronautical equipment

☛ Fishing rods

☛ Boat hulls and seats

☛ Wall paneling