Standard diameters for fiberglass rebar include: Φ6mm, Φ8mm, Φ10mm, Φ12mm, Φ14mm, Φ16mm, Φ18mm, Φ20mm, Φ22mm, Φ25mm, Φ28mm, and Φ32mm. Common sizes range from Φ8 to Φ16mm; custom diameters are available upon request. Standard lengths are 3m, 6m, 9m, and 12m, with custom lengths also available.