Herculite Ultra Unidose Refill Enamel A1 Universal Nanohybrid CompositeHerculite Ultra Unidose Refill Enamel A1 Universal Nanohybrid Composite. Herculite, which has been considered the gold standard of dental composites for more than 20 years and is recognized across the globe, has expanded into the world of nanohybrid dental composites with Herculite Ultra. Overview Universal Nanohybrid Dental Composite Optimal handling, non slumping Superb ease of placement Long lasting polishability Item Code: 34347 A1 Packing List 20