... : fiberglass, Resin & Fillers 2. Process: Pultrusion 3. Sizes: Custom fiberglass rods, fiberglass bar, fiber glass flat rod (FRP Rebar, Fiberglass Rebar ... *The specifications are customized, and can be made by flat, round, strip with groove etc.Features:1. Low Density2. High Strength ... , 7.5x20, 9x3.822. Special Size: 6.35x3.175mm fiberglass rods, fiberglass bar, fiber glass flat rod