OC Milled Fibers are glass fibers, coated with a specific sizing to enhance resin compatibility, and then milled to a specific bulk density. OC Milled Fibers are produced in two general product forms - powder and floccular - and are used in both thermoplastics and thermosets. In the powder form, molders obtain good flowability with a high bulk density, and benefit from increased productivity and lower manufacturing costs. Molders looking for lower bulk density use the floccular product form with longer glass filaments. Both product forms offer excellent dimensional stability, shrinkage control, high modulus and acid resistance in applications.