... 2. Process: Pultrusion 3. Sizes: Custom fiberglass rods, fiberglass bar, fiber glass flat rod (FRP Rebar, Fiberglass Rebar, Composite Rebar)Color ... Temperature Range Main application:This series of products can be used in aerospace, sports equipment , transportation , communications , electronics, model toys , ... 822. Special Size: 6.35x3.175mm fiberglass rods, fiberglass bar, fiber glass flat rod