Lightweight alternative to multiple layers of fiberglass! The 2mm and 4mm Laminate Bulkers are made out of fine polyester, non-woven, multi-directional fibers that provide equal strength characteristics in both the length and width directions. By allowing easier resin distribution throughout a part, these Laminate Bulkers act as strong interlaminate links between different layers of reinforcement. Also, Laminate Bulker materials add screw retention capabilities to laminate parts. Compared to bulk laminating with fiberglass, these Laminate Bulkers provide tremendous weight savings. Withstands severe duty fatigue, low resin consumption, excellent impact barrier, low shrinkage, superior shear strength, prevents stress cracks on gel coated parts, maintains a constant thickness, Easy to use.